Okay, I forgot about that scan regarding genjutsu.
How is Sasori going to summon the Third Kazekage puppet and use him to manipulate sand before Itachi nails him with Amaterasu? Amaterasu travels faster than Sasori can react with IS. He has to move his fingers, which in turn control the 3rd Kazekage puppet, which in turn moves the sand to block LoS. Itachi can shunshin to a different position or closer location and use Amaterasu from there where Sasori can't react at all, or even keep up with his speed. Iron Sand is way too slow to keep up with Itachi as even Sakura was dodging it without difficulty. There's nothing Sasori can do to prevent Itachi from closing the gap between them and engaging him in close combat then killing him with a kunai to the heart, and clones just make this harder for Sasori. With Sasori starting in Hiruko this just makes things even worse.
Itachi does not start fight with Amateratsu. And Sasori simply needs to fire a senbon/Gaseous poison and then summon the 3rd Kazekage. However, for the sake of argument I'm just going to say Sasori starts with the 3rd Kazekage (since that's what I'm really interested in, my bad for not clarifying in OP). Sasori will see Itachi's eyes bleed, and then put up the IS barrier. Sakura was dodging it with Chiyo's assistance. And do note, her assistance increases reaction speed, agility and allows you to do things you wouldn't be able to normally do. And I also don't recall which IS Sakura dodged by foot speed, it was
always her getting
You must be registered for see links
by Chiyo's chakra strings. So Sakura did not do anything by herself. She clearly would've died here [
You must be registered for see links
][
You must be registered for see links
] had their been no puppet assisting her with chakra shields.
IS is not slow at all, Itachi will not be brushing them off, and this will be especially true if Sasori decides to use his Iron Sand like Gaara uses his own sand [
You must be registered for see links
]. He made a whole lake of IS from the small amount you see on the left (initial amount). Meaning Sasori can expand the amount of IS by increasing chakra exertion into the IS. So Sasori is obviously no joke, and his IS goes at
You must be registered for see links
, with
You must be registered for see links
. So no, Itachi will not be shunshin'ing around Sasori, that's not happening; ever. Especially if Sasori decides to go airborne, at which case Itachi cannot hit Sasori with anything he has bar Amateratsu (which will fail).
Itachi wins. Evading Iron Sand Jutsu is going to be no issue at all since the likes of Chiyo and Sakura were doing it. When it comes to the larger shape variants though, they did have trouble...but Sakura started to adapt and evade on her own and Itachi>>>>>>Sakura in speed. He evades all his attacks and makes his way toward the Kazekage, and destroys him with an exploding clone. His speed along with the fact he has the forest as cover, and his extremely fast hand sign speed means that Sasori will never even notice that he made a clone let alone being able to protect himself from said clone in time, and clones let him attack from multiple angles, making it harder for Sasori to counter. Not to mention things like Katon can be used as a distraction or a cover to get his clone close, just how Itachi used his Katon as a distraction to get the jump on B and Naruto.
100 puppets never even managed to touch Sakura, not touching Itachi.
Iron Sand World Method was only dangerous because they were in an enclosed space. Itachi evades it with ease in an open area.
Not an admissible argument. Chiyo and Sakura did not dodge IS. Chiyo was only blocking it because she could not move out of the way (and her shield happens instantly, since it's a part of her body), and Sakura would've been hit on every occasion IS was used, including the one were the puppet used chakra shield to save her. The only time she was able to avoid it was when Chiyo threw Sakura upwards and then backwards with chakra strings. Sakura was not in control (at all) and Chiyo could do this far more easily given she had intel on Sasori's abilities, and she was further away, meaning she could throw Sakura back even when Sakura was right underneath an IS block. So no, Sakura adapted to nothing and evaded nothing, so that comparison doesn't work. Moving fingers a few millimetres is obviously far faster than moving your whole body, which is what Itachi has to do. And making his way to Sasori and the Kazekage is easier said than done when Sasori is airborne.
100 puppets aren't useful against Itachi, I'd say.