Originally posted by Nephthys
How? Bane is the far more dominant duelist.
Bane isn't a far more dominant duelist, he is just better explored then Revan.
I can assert that Nyriss is superior duelist then Bane based on her treatment of two expert swordsmen Scourge and Meetra. However, you are aware of the outcome of her encounter with Revan which wasn't a lightsaber duel but it set Revan apart from majority in the mythos in the context of power and command of the Force and this disparity is sufficient indication that Revan is among the best of the best and possibly superior to even likes of Bane and Zannah.
But since you consider Bane to be on par with Sidious and Zannah to be on par with Vitiate, I don't see breakthrough in this debate with you anytime soon.
However, I do notice similarities between Bane's clash with the Jedi Strike Team on Tython and Nyriss's clash with the duo of Scourge and Meetra on Dromund Kaas and the author (Mr. Karpyshyn) have clearly established a distinction between Revan and others he wrote about barring Emperor.
Sorry my friend, Revan > Bane (any incarnation)