Board Thread:Naruto Discussions/@comment-28869806-20150825192623/@comment-3568954-20150827031402

kabuto was on a league of his own he had evolved from a snake to a dragon. and had a perfect sage mode. he had the powers of many shinobi. including orochimaru.

advanced healing. water shedding jugo's ability passively absorb natural energy so that he could have an indefinite sage mode. Jutsu that can render susanoo useless, techniques that allows him to manipulate the surrounding terrain(thats kaguya level shit right there the terrain ability not all of them)

like kabuto said he was the closest thing to being the sage of the six paths anyone could become with out requiring the Rinnegan. even the databook states this i believe he was just toying with sasuke and itachi and didn't get serious only because he didn't know about izanami had he known about it he would have switched it into second gear and attacked in a manner to avoid getting trapped in izanami ie defeat itachi and reprogram the tag in him