Re: VS Thread [With Manga Spoilers!]
We don't know what either of them are fully capable of. Especially Suigetsu and Juugo. But, for the sake of the topic, I'd say Sasuke. Since he pretty much threatened both of them, and they both pretty much felt inferior to him. Sasuke's time at Orochimaru's base, I think gave him insight on their strengths and weaknesses. Or not. I don't really know that. But Sasuke seems to think he can kill them both, and they both seemed to have felt the same thing.