Fanfic Itachi feats:
Attack: Universal- Can seal the whole Earth by piercing it with Totsuka. Or maybe the whole universe. Already beat Galactus in numerous threads using this method. Can seal the atmosphere, or even vacuum
Defence: Omniversal level- Yata Mirror blocks any attack, even attack that can destroy millions of multiverses
Speed: Faster than Light (FTL)- Apparently can blitz anybody with Totsuka, already beat Superman in numerous debates with Totsuka blitz.
Stamina: Nigh infinite- His susanoo can put up the omniversal Yata Mirror and Totsuka blade for an infinite amount of time. No stamin issue is considered
Intelligence: Puts Batman, Reed Richards, Thanos etc. genius to shame. Apparently smarter than Sasuke (confirmed by Black Zetsu)
Reflex: His sharingan precognition sees light travelling like snail. Probably has better reflex than the Flash (Reacted to Sasuke's Kirin?)
Haxx- Can beat any opponent with Genjutsu, no matter how fast the opponent is. Can use genjutsu to beat opponents who don't even have chakra. Tsukuyomi GG
Canon Itachi feats-
Attack: Can punch through a wall. His amaterasu burnt a crow. Sealed immobile Orochimaru and puppet Nagato who wanted to be sealed
Defence: Tanked a hill level attack with Yata Mirror. Became blind soon afterward
Speed: Kept up with KCM Naruto in Edo Mode. KCM NAruto is slower than BM Naruto and anybody who's stronger than BM Naruto
Stamina: Fought with Hebi Sasuke for around 20 minutes before activating Susanoo. Died within 5 minutes after activating normal susanoo
Intelligence: Lots of hype based on Black Zetsu's speculation. Couldn't even identify Obito as Madara. Found no alternative to killing his parents or abandoning Sasuke
Reflex: Reacted to Sasuke's kirin, which is millisecond reaction feat
Haxx: Died because of unknown disease. Never beat anybody stronger than Orochimaru, Hebi Sasuke or 3T Kakashi in 1 on 1 fight. Fled before Jiraiya for unknown reason
