Board Thread:Theories and Speculation/@comment-30168130-20170319171713/@comment-1512913-20170321092248

Well, chakra is made of physical and spiritual energies, right? So it's likely that missing body parts results in decreased chakra capacity. And it's true that Sasuke got some of the powers he shares with Madara at a younger age, but Madara seems to have the superior body and battle expertise.