Quote Originally Posted by Abdula
The epic battle between the two was a stalemate for 1000 years or something like that and although the eight tails power rivals the Kyuubi in quality, the Kyuubi has a limitless supply of chakra so he eventually won. Some nonsense like that
Replace "supply of chakra" with "supply of FRIENDSHIP" and you've basically got a probable outcome for the final Naruto/Sasuke fight.