Board Thread:Versus Debates/@comment-24142271-20150818121911/@comment-24544604-20160505235703

I'm assuming Kisame still has Samehada during the fight, so I'd give to Kisame, since the fusion allows him to not only create the giant orb of water, but breathe in it, a feat that (as accomplished as Tobirama is in Suiton jutsu), he simply does not have, due to his entirely human physiology. The most Tobirama could do if that happened was manipulate the sphere itself to his advantage, and even then, Kisame has the advantage of pure speed, as proven in his fight with Killer Bee.