So, in the end, who is stronger? Naruto who has his raw strength or Sasuke who has ingenious strategies? Perhaps the answer could be found if they fought. And fight they did. In the valley of the end, Naruto and Sasuke had a definitive fight. It was a grueling fight. They both had equal power ups, Naruto with his Kyuubi stage 2 and Sasuke with his Curse Seal 2. It was an extremely close fight but in the end, it was Sasuke who won. However, let's not forget that Naruto only had a few tails out then from the Kyuubi and he's still got up to 9 tails to go in terms of just Kyuubi's side of power. Besides powers from Kyuubi, Naruto has been constantly been training very viciously in the Naruto Shippuden series and now in Kakashi's own words "surpass" Akatsuki members by himself. Although Sasuke is more powerful then Naruto, in Shippuden if they were to have a fight today it's tough to say that Sasuke would be close to winning the fight. On the other hand we would expect Naruto to win, although by not much.
