Okay, this is purely my opinion and आप can totally ignore this, but if you're interested, listen up!
ऐनीमे have been known to be different from their original manga. Some changes are not major, some change the direction of the story completely. Usually, such changes arise at the ending of the anime. Think about most anime:Soul Eater, FullMetal Alchemist, KWMA, and a host of others, their endings are usually different from the manga. And when आप compare these endings to the manga, the मांगा endings are (usually) much better.
Due to the never-ending suspense नारूटो is giving us, many नारूटो प्रशंसकों have gone ahead and read what happens at the end, and many are pleased with it. But if नारूटो (the anime) follow the path of other ऐनीमे and alters the ending...well आप can guess.
This alteration is not expected though, as while major changes are made to ऐनीमे from the beginning, the नारूटो ऐनीमे has only gone through MINOR changes. All we can do is पार करना, क्रॉस our fingers and wait in anticipation, hoping that the worst does not come to pass.
Again, JUST my opinion!

*You can find the differences between the नारूटो ऐनीमे and मांगा at the link below:
naruto.wikia.com/wiki/Anime-Manga_Differences