Sakura is (99% certain) thinking Sasuke saved her because he caught her from falling when the sand fell away from her and the tree. And no-one ever see's Naruto fighting. Sakura gets knocked out , Kakashi is back at the village and Sasuke wont talk about it at all because he talks the least anyway (and when he does its nothing to do with whats happening at present!). The little dog, Frogs and Sand Ninja all went back to where they came from and Naruto is still, in everybodies eyes, the same stupid Naruto as he has always been. Well , of course he has grown , through 80 episodes, I would expect so to, just that a heck of a lot of people havnt realised this until the last , say, 10 episodes ( people = people in the anime).