Would novel Revan stand up nearly as well to Valkorion, who knows that his mind techniques won't work (and thus wouldn't bother with it), and has three centuries of growth on Vitiate? Most of Revan's success against Vitiate came from the latter failing his TP and Revan using his retarded twin rivers power in response, which caught the Emperor off-guard. That won't happen here.
Novel Vitiate's enough to swing the advantage around, though.