I'm kind of going for Yoda in this fight. Revan fought mostly unknown Jedi and Dark Jedi (and Sith) and the only real person he faced that we knew a little about was Malak who we know little about expect he took control of the Star Forge and he betrayed Revan. That's all we know of his abilities and him in the war we never seen him fighting so we can't be sure with that one.