Since the beggining of Naruto there has been talks about Sasuke>Naruto or Naruto>Sasuke. Lets be realisitic Sasuke and Naruto will be on the same level when they finally do battle reason being thats what would make sense. Kishi will not make either far superior to the other because that would make for an incredibly boring fight. If Naruto does kill sasuke or vise versa (which i highly doubt considering its called Naruto) it will be a fight so intense and close that the victor would be near death(that is considering someone dies). So just stop with these random discussions about Naruto would destroy sasuke or sasuke would destroy naruto, they will be on the same level. When you do that fanboy nonsense you're just making an ass out of yourself.