Okay. Let's ask ourselves one question.
In Part II, when Naruto and Sakura tried to take the bells from Kakashi, they still couldn't get them by FIGHTING them. They were both fighting to kill as Kakashi told them to.
Sasuke took out Sasuke, Yamato, Naruto, and Sai at once during their first reunion.
Since then....
Naruto- Gained speed, took control of the Nine-tails, learned Sage Mode, defeated Akatsuki members, surpassed the Raikage in speed, and maybe even the fourth....
Sasuke- Gained speed, defeated Akatsuki members, got the Mangekyo Sharingan, Gained the EMS, took on the Kages....
Sakura- Who?
In Part II, when Naruto and Sakura tried to take the bells from Kakashi, they still couldn't get them by FIGHTING them. They were both fighting to kill as Kakashi told them to.
Sasuke took out Sasuke, Yamato, Naruto, and Sai at once during their first reunion.
Since then....
Naruto- Gained speed, took control of the Nine-tails, learned Sage Mode, defeated Akatsuki members, surpassed the Raikage in speed, and maybe even the fourth....
Sasuke- Gained speed, defeated Akatsuki members, got the Mangekyo Sharingan, Gained the EMS, took on the Kages....
Sakura- Who?