I'll have to give this to Sasuke.
In his current state, he is capable of enveloping the field in Enton considering that he is capable of producing Bijū sized Amaterasu [
You must be registered for see links
] and Itachi in his 'sick' state already did something similiar to that. [
You must be registered for see links
] This would allow him to counter Naruto's speed. Due to being in a field full of Enton, Naruto won't be capable of moving freely anymore so Sasuke will be capable of hitting him with his attacks. Before I see someone claiming that Naruto can simply remove that Amaterasu from his body with some kind of tactic, no, in reality that won't happen. Amaterasu causes extreme pain to it's target. Bī trashed around like crazy from the pain and couldn't do anything while Obito fell of his feet from the pain even if it was only a second on him.
Naruto won't be capable of doing anything due to extreme pain. After all, it is said that Amaterasu is hot as the Sun. Also, don't bring up the 'Amaterasu burns slowly' argument because when the user focuses his sight on the target, Amaterasu burns rather fast considering how fast Itachi burned throught a wall of flesh [
You must be registered for see links
→
You must be registered for see links
] and how fast Itachi burned Sasuke's Katon.
The Bijūdama could be viewed as a threat, however, Naruto needs to focus in order to gain the 8:2 raito he needs in order to create a Bijūdama. [
You must be registered for see links
] In this time, Sasuke can easily hit him with a Susano'o Arrow which are noted by their extreme speed [
You must be registered for see links
] or perhaps with Amaterasu which can only be avoided by someone who is as fast as Ay in his Bājon Tsū Raiton no Yoroi. [
You must be registered for see links
] Naruto can only use the Bijūdama if he is in his Kurama avatar which is rather big and in that state Naruto isn't fast anymore considering that Sasuke in his Bājon Surī legged Susano'o didn't really have trouble keeping up with him [
You must be registered for see links
] nor can he actually run around while trying to achieve the 8:2 ratio since he needs to focus. There is also the fact that Sasuke can supress Kurama in that time. [
You must be registered for see links
→
You must be registered for see links
]
Even if by some miralce Naruto does indeed manage to charge up and fire off a few of them, Sasuke can easily produce an Enton Blade which would extend itself and allow Sasuke to pierce the Bijūdama causing it to explode and if there are multiple of them, the explosion of the first one will cause the other ones to explode as well. Lets not even mention how the Enton Blade could instead of piercing the Bijūdama slice it considering that it can slice throught something like rock rather easily.
We also have to consider the fact that Sasuke's Pāfekuto Susano'o would be capable of tanking the Bijūdama just like Madara did with the Susano'o swords. [
You must be registered for see links
] There is also the fact that Sasuke's Bājon Surī legged Susano'o is as big as Kurama [
You must be registered for see links
] so Sasuke's Pāfekuto Susano'o would be much bigger than Naruto's Kurama considering that this time it won't be enveloping Kurama and it will be standing on it's own two feet. Now we have the shockwaves produced by the Pāfekuto Susano'o [
You must be registered for see links
] which Sasuke's own can produce considering that his Bājon Surī legged Susano'o was capable of producing a shockwave as well [
You must be registered for see links
] [Even though it wasn't as powerful as the Pāfekuto Susano'o's one] and then add the Enton's cutting power to that. Sasuke can also slap the Bijūdama away with the Susano'o shockwave or swords just like Naruto did with his Chakura Tail. [
You must be registered for see links
]
With that being said, Sasuke
can counter the Bijūdama. Rasen Shuriken, like you yourself said, will be overcomed with Amaterasu. [
You must be registered for see links
] Or Susano'o can tank it considering that a Bājon Tsū Susano'o tanked something as powerful as Kirin [
You must be registered for see links
] which destroyed something as huge as the Uchiha hideout. [
You must be registered for see links
] Now before I see some nonsense about Sasuke being blitzed, no, that won't happen. Sasuke could keep up with Ay's speed with his Sharingan [
You must be registered for see links
][
You must be registered for see links
] and Naruto isn't that much faster than him. Furthermore, Sasuke's Shunshin isn't bad at all;
→ 1] The first feat I would like to bring up is in his battle against Deidara. In this scan, Deidara is just as big as Sasuke's head [
You must be registered for see links
] and then he suddenly appears in front of Deidara, shocking him without the latter even realizing when Sasuke made the move. [
You must be registered for see links
] He even commented on Sasuke's speed by stating ''He's fast!''.
→ 2] Sasuke is standing right bellow Deidara [
You must be registered for see links
] and then suddenly he appears behind him. [
You must be registered for see links
] Deidara has no idea when Sasuke got behind him and is shocked, barely escaping his attack.
→ 3] Sasuke and his team appear to be as big as the prisoner's arm [
You must be registered for see links
] and then Sasuke suddenly appears behind him while cutting his chest open and both Karin and Suigetsu now seem a little smaller than Sasuke's head. [
You must be registered for see links
] He covered such a distance in a blink of an eye.
→ 4] Deidara is forced to use Shī Tsū because he thinks that 'Sasuke's movements are definitely too fast'. [
You must be registered for see links
] Please look at Deidara's size and the Dragon's size. [
You must be registered for see links
] Now check out the size of the explosion. [
You must be registered for see links
] Sasuke escaped the explosion and Deidara comments on his speed once again, saying 'Damn, he's fast!'.
→ 5] Next, Sasuke appears to be half the size of Naruto's head. [
You must be registered for see links
] Same can be said for Naruto. [
You must be registered for see links
] Then suddenly Sasuke appears down, holding Naruto's shoulder and shocking him. [
You must be registered for see links
] Yamato comments on his speed. Sasuke covered such a distance in a flash [
You must be registered for see links
] while Sakura didn't even notice when he made the move given her comment. [
You must be registered for see links
]
→ 6] This may or may not be as impressive as the Shunshin feats above, but I'll still add it. Sasuke was capable of evading Bī's attack [
You must be registered for see links
] and Bī comments on how no one except Ēi was capable of avoiding Bī's attack.
→ 7] At the Kage Summit, Sasuke was capable of appearing in the meeting room and no one was capable of noticing it until he made a cut on one of the curtains which shocked those present in the room in that moment. [
You must be registered for see links
] Please note that he was fast enough to cut all three of the curtains in the room present at that time as well.
→ 8] You can see that Sasuke's head is almost as big as Sakura even though he is running. [
You must be registered for see links
] Both Sasuke and Naruto, who is in his Kyūbi Chakura Mōdo, are running towards Sakura to quickly reach her and then Sasuke suddenly appears next to her before Naruto does and Sakura is shocked given her '
!'.
→ 9] Naruto is falling and Sasuke is no where in sight [Top panel] while Obito is trying to hit Naruto [
You must be registered for see links
], shocking him. And then suddenly out of no where, Sasuke appears and uses Susano'o to protect Naruto which in return shocked the latter. [
You must be registered for see links
]
→ 10] Sasuke and Itachi are on the other side of the cave, holding Kabuto's snakes. [
You must be registered for see links
] And then suddenly, Sasuke appears behind Kabuto and takes off his hood. [
You must be registered for see links
]
→ 11] Sasuke is standing and the Samurai are a few meters in front of him. [
You must be registered for see links
][
You must be registered for see links
] And then suddenly he appears behind the Samurai, making a clean cut and shocking the Samurai without us or anyone else even noticing when Sasuke made a single movement. [
You must be registered for see links
]
→ 12] Suigetsu and Juugo are a meter [Maybe less] from each other and are about to make their attack [
You must be registered for see links
] and then suddenly, Sasuke appears between them, restricting their movements. [
You must be registered for see links
]
Clones will be dealt with the Enton Yasaka Magatama which was created in order to get rid of clones [
You must be registered for see links
] and they won't even be able to move freely due to Enton being spread over the battlefield. Now, let's not forget how
the Bijū Mōdo has a time limit which Sasuke himself can easily outlast.
Please remember that this is only my opinion. Thank you.