Board Thread:Versus Debates/@comment-27418151-20160521030355/@comment-26773508-20160521171930

I'd go with Tobirama winning more often than not. He's definitely familiar with Kagutsuchi. He also knows a few things about Susanoo since at least Madara had it. He has the speed, techniques and chakra reserves. And most of all, he's incredibly smart. His only problem would be PS. Kirin, as fast as it is, can be avoided because Tobirama uses FTG, which is instantaneous. Tobirama is also a master sensor and so he almost certainly can sense chakra building up in Sasuke's eyes before he uses Amaterasu. So I don't think Amaterasu would be a danger to someone of Tobirama's calbre. It's also fair to assume that half-body Susanoo won't be a problem for him, since he faced the likes of Izuna and Madara throughout his youth.

So the only problem I see here is Perfect Susanoo. Tobirama definitely has some intel regarding the PS because of Hashirama vs. Madara. But I think Sasuke will get marked with the FTG tag early on in the battle, since I don't think Sasuke will whip out the PS right away. Tobirama is a very smart combatant and it's overwhelmingly likely that find a way to tag Sasuke without him knowing about it. And that tag can make a huge difference in the battle.