Version_401
The whole getting stronger for friend's schtick is lame. Naruto powered up because he is the reincarnation of a quarter space god with incredible genetics and a biju in his belly. The guy is straight up a hax character and it took a village full of peeps sabotaging his early development to keep him down. Naruto latched onto every technique he learned in record time and accomplished things incredible geniuses couldn't with ease. Not like Tobi would know that, but he is a literal cheat character himself.