Board Thread:Theories and Speculation/@comment-27717552-20160513151229/@comment-25093611-20160514182750

^and save for some broken ones like nagato, uchihas or jinchurikis there are actually not a lot who can compete with him,

so dedicating years to master a jutsu that also takes a immense amount of chakra, which will also cripple ones own hand without perfect sage mode seems rather useless :)