Darth Revan as a former proxy actor of the Will of the Force, a true hero, has a greater will and vision for the galaxy than Tulak Hord. It is with no reservation I declare Revan the winner of this battle, for to be a hero, you must be able to be an even greater Sith than those Sith who can not become heroes!
True, and Revan could not even defeat Vitiate! He may be a proxy actor, a hero for the Force, but he is not the only one nor the greatest! In many ways he is a troubled, corrupted being as we all are, he is not pure, in an obvious way to a large extent the dark side has corroded him, and he believes he can shape the will of the Force to his own ends - like a Sith who believes the Force serves him! What a perversion this is!
But alas, Tulak Hord is a potent warrior but has exacted minimal influence over events of the galaxy, revered but hastily forgotten, buried under the sands of time! Revan shaped the galaxy! He conquered a Republic, beat back the Sith and defeated the Mandalorians! How can you say Tulak Hord is greater than this?! His will is insufficient for the purpose!