I'd also say Genin is right for Naruto. If some jounin rank guy as big as a mountain comes along and wants to trade chakra blasts, he can beat them. If they act like a ninja he'd probobly never know what killed him. He really never seems to fight that much better than Sakura unless he gets emotional or whatever and then he doesn't really fight any better either, he just hits harder. Naruto is still the man, though.