I'm a naruto fan never really liked sasuke for a number of reasons but even I have to be honest here.. apart from kishi's b.s naruto has no real way of defeating sasuke.
there are 3 ways naruto can win this fight IMO:
1. TNJ but sasuke is immune to that
2. Outsmarting sasuke... lets be honest naruto's an idiot, that's not going to happen
3. Overpowering sasuke, that's best possible solution but I dont see that happening unless he gets another ridiculous power up. This was crossed off the list when sasuke captured the bijuu and used their chakra
there are 3 ways naruto can win this fight IMO:
1. TNJ but sasuke is immune to that
2. Outsmarting sasuke... lets be honest naruto's an idiot, that's not going to happen
3. Overpowering sasuke, that's best possible solution but I dont see that happening unless he gets another ridiculous power up. This was crossed off the list when sasuke captured the bijuu and used their chakra