Originally posted by AncientPowerYeah on a nexus, and again after losing a portion of his being and most of his sanity.
His powers intensified after his death, he went from losing to four Imp protags to handling two far stronger strike teams back-to-back whilst controlling his ritual. Dark Revan became the anti-Vitiate, utterly obsessed with defeating the Emperor. He's going to be far more dangerous than in the novel.
Point is while Revan undoubtedly got stronger, his gains were mitigated somewhat by his losses. And this is explicitly stated in the game.