Other than ameratsu I believe he may be able to defeat an uchiha/sharingan user,think about it...if caught in a genjutsu he has 5 hearts to inject chakra into himself!(conveniently placed along his back,in conjuction with the chakra points along the spine)Sharingan wouldn't be able to predict his jutsu as he doesn't require handsigns for the majority of them?He is able to perform elemental combinations within an instant?And he isn't exactly a slow character as we have seen aswell!What do you guys think?