Naruto, high diff.

Orochimaru questioned who was stronger 3 tail Naruto or Hebi Sasuke. And this Sasuke is stronger especially considering genjutsu and Amaterasu

I'd argue for Three-Tails Naruto. Jugo points out that Sasuke was weaker since he hadn't healed from his injuries against Itachi

He also lost the Curse Mark (which gives a x10 multiplier to the user with CS1):

Naruto would only win if Sasuke hadn't MS.

If Sasuke could turn on MS right away, then Amaterasu GG

In raw power Naruto wins, but Amatarasu = Instant win bc naruto can't defend against it so we're not going to count that. Naruto demolished Orochimaru which is what allowed Sasuke to kill him. Sasuke would likely have lost if not for Naruto and because of this Naruto wins.