Re: who has "grown" the most?
I would argue that it has been Sakura seeing as in part 1 she was always in the wing doing nothing but getting in the way and always crying. Acting tough, but couldn't battle nor do anything to help the others progress or defend. She knew of nothing more serious unlike Naruto and Sasuke who both had other agenda and actually fought to progress more in part one. Over the two and half years, she has progressed to actually battle, wisdom and to handle....etc.
Member of the Badass Shinobi FC