Board Thread:Theories and Speculation/@comment-32742265-20180119154238/@comment-732150-20180125205325

I don't get what's so difficult about this. Sharingan copying non-kekkei genkai nature transformation jutsu is a bit like copying taijutsu. Sure, the Sharingan can copy the movements, but if the Sharingan wielder doesn't have the body skill to perform at the same level, there's significant strain and they can't perform the taijutsu quite the same way. Sasuke had some issue with it in early part I when copying Lee's taijutsu. With nature transformation jutsu, sure, you can copy and understand how the jutsu works, but if you don't have the skill with the nature transformation, it won't work. Knowing how to perform a jutsu and actually doing it are different things. Even after Naruto learned from Asuma how to better use wind chakra, it still took him time to actually perform it. For another comparison, think of it like chakra control. Trying to use a nature you haven't trained in is a bit like having poor chakra control, you end up using more chakra than you need, for a weaker effect. If Sharingan could simply just copy every non-kekkei genkai nature transformation jutsu, then every Uchiha who ever awakened the Sharingan should have no excuse for now knowing jutsu for the five nature transformations just from watching someone else doing it.