You call that a Taijutsu fight? Itachi jumped down on Naruto, they blocked each other, Bee came in and swung at Itachi, Itachi runs away. That's literally all that happened. We can't gauage who wins in a taijutsu fight based on that when one, Itachi was Edo and had lower stats across the board, two, Naruto wasn't seriously going all out, and three, it lasted all about a few seconds.
KCM Naruto displayed higher reflexes than Bee did considering he managed to perceive Itachi's Shunshin faster than Bee did and initiated a counterattack, the latter being able to demolish Taka Sasuke in a fight, the same guy when severely weakened could handle 3T Kakashi in CQC after his fight with Danzo. It's important to note Kakashi displayed superiority over both Asuma and Kurenai as he managed to perceive Itachi's seals and counter with a bushin feint that Kisame didn't even detect.
Bee is the same guy who couldn't even disarm Kisame after Kisame was forced to parry Sabu whereas Gai parried Kisame and disarmed him. Gai is far above Asuma in terms of reflexes even in Base.
Asumas DB stats speak for his lack of panel time. His Taijutsu and Speed are ranked equal along with Kakashi, who can hold his own against a base Gai without Sharingan.
Except they're not considering those stats are excluding Kakashi's Sharingan which enhances his reflexes considerably.
Your basically saying Gai will dance around Asuma and shit all over him flawlessly, which is not happening to someone ranked in the same tier as Kakashi in Taijutsu with more reach and can slice off his limbs on contact.
Asuma is not in the same tier as War Arc Obito who casually overwhelmed KCM Naruto in CQC and even managed to overwhelm him even later without any Kamui usage whatsoever and Base Gai performed exceptionally, far better than KCM Naruto even did who has superior reflexes to Base Bee. There's also your misconception that Kakashi is suddenly as experienced as Gai is in Taijutsu when Gai has had a 5 in Taijutsu ever since the beginning of Part 1 which has been improving ever since.
There's also the fact that Zetsu warned the Akatsuki not to understimate Base Gai's Taijutsu prowess whereas no such thing was stated for Kakashi making the implication that Gai has more experience in CQC than Kakashi does.
Bro, Gai is more experienced than Naruto, his battle senses would obviously be sharper and we know CQC is his main area where as its not for Naruto so he didn't look more impressive, he is more impressive. What was Naruto doing anyway? Rasengans, Taijutsu, and chakra arms? The latter he just received hours prior to that point?
Chakra Arms were a basic ability he achieved ever since he awakened his Kyuubi Cloak and he further improved his Chakra Control since then. His Chakra Arms are actually very impressive as he managed to create Chakra Arms faster than Muu can even perceive.
Also, Gai didn't disarm Kisame, the entire team 9 contributed with attacks and he was successfully disarmed. Again, Asuma was Edo, they have lower stats across the board, so he wasn't 100% for the choji panel.
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Again, you're wrong. Gai overpowered Kisame in CQC and disarmed him without any aid as Gai only called in for help after disarming him.
The Edo Tensei that Kabuto revived weren't stated to to be weaker than their original counterparts whereas Madara and the Kages were. It's still pretty pathetic either way as Asuma was pressured by Shikamaru's Shadows and even Ino could compete with him in CQC. Even if you could argue that Edo Asuma < Alive Asuma, it really doesn't matter as the Edo Kages were stated to be revived at almost full power.
I just told you how Yamato can beat him. Mokuton Bunshins can feint Gai and he can restrain him in a prison and impale him. Speed? What speed do you think Yamato needs? Kisame was ranked a 4 in speed and Gai couldn't pressure him or prevent him from using techniques, Yamato is also a 4 so I don't know what you're really asking for.
Mokuton Bushin feint that Sai could even perceive who has inferior stats to Asuma which I have proven is vastly inferior to Base Gai. Yeah, that's not happening. Yamato and Base Naruto couldn't even overcome a partially enhanced Kabuto, so there's no reason to believe that Yamato can compete with Base Gai.
Kisame has far better reflexes than Yamato seeing as how he could react to Base Bee who has inferior reflexes than Base Gai. But really, what hurts you here is that a Weaker incarnation of Itachi could Shunshin blitz Kurenai who also has a 4 in Speed. It's important to note that KCM Naruto reacted to Prime Itachi's Shunshin speed and Gai displayed superior reflexes to that.
So yeah, Yamato can't compete with Base Gai. His Mokuton isn't enough to overpower Part 2 Kabuto prior to him receiving Orochimaru's cells, so Base Gai casually counters any attempt Yamato makes at bushin feinting him.