Board Thread:Versus Debates/@comment-26636534-20150919130455/@comment-26537507-20151001131506

Yes we are because of Kabuto's ridiculously OP healing. Until someone proves otherwise, I will maintain that Kabuto can heal from physical damage almost instantaneously, rendering all ninjutsu and taijutsu attacks useless. He's also be shown to have ways to counter genjutsu, so we can throw that out the window as well. The only techniques/tools that people have mentioned as a means to beat Kabuto are: Izanami (which Kakashi doesn't have as far as I know, and also doesn't kill Kabuto), Totsuka Blade (would seal Kabuto but only if it hits, Kakashi doesn't have this either) or Kamui/Kamui-related techniques (since Kabuto would have no way back from Kamui dimension).

Unless you have some new information or a different perspective, the only way Kakashi can win is if he can catch Kabuto with Kamui.