Board Thread:Versus Debates/@comment-43403813-20190907005521/@comment-33286580-20190923195440

Pein wins.

high level difficulty only because Itachi is supposed to be freaking smart and that convo he and Nagato had in their Edo bodies as they made their way towards Naruto indicated that he somewhat knew the secret behind Pein, or more like about Nagato. i dont think he knows about the SIx Path of Pein's power.

even then he simply does not have the kind of power to defeat Pein.

his best are MS techniques.

Amaterasu is no go. Like Pein has multiple options against it. he showed to deflect it with Shinra Tensei. he could absorb it with Preta Path. he can have one Pein take it on and resurrect it with Naraka path (i hope i am right on this one).

for Tsukuyomi. Rinnegan was the only one which had ability to be unaffect by Infinite Tsukuyomi work. even then, the Pein bodies are corpses. they work in a way like a mixture of Kabuto's dead body jutsu he used in part1 in the hospital when he came to kill Sasuke and Shadow clone jutsu, but on a far superior level. now Genjutsu certainly should not work on dead, but it is kind of contradictory in regard to clones. it didnt work on Kakashi clone, but the Naruto that met Itachi when he got Shisui's eye had to be a clone. even then if it somehow does work, i can think that Rinnegan can break through it as Rinnegan is far stronger than Sharingan or MS.

Oh, on the above discusiions of Tsukuyomi time period. dont forget that putting Kakashi for 3 days in the jutsu heavily taxed on Itachi ande even then Kakashi was still not knocked unconscious. so for someone like Pein with Rinnegan and dead bodies and Uzumaki lineage he would have to go for many days to even kill him. the more days he spent the more Chakra he has to extend which time and again is shown is not something he has in abundance. that is why the novel one where he showed his gf 80 odd years just screams bullshit.

Susanoo. he has to at least have armoured Susanoo. that alone means he has to have used it many times, which makes him go blind faster. even then, Pein can just blast it with Shinra Tensei or have monstrous animals charge on it or simply absorb the strikes by Preta path.

Then there is Pein's CHibaku tensie. alone Itachi does not have the raw power to destroy it.