Male Revan would listen to Sion's "You cannot defeat me!" spiel, roll his eyes, and proceed to grind his immortal butt into immortal dust.
ah, no... i believe he would slip some joke about sion and his personal insecurities somehow tied in with his appearance in an insensitive manner, yet retaining the heroic righteousness of a guy with a golden heart.
...ahhh yes, the complete subjectivity of a character never to see the light of canonization. :P