Well, Revan would likely confront Kreia, the one he could best deal with. Since by KOTOR II Kreia was already taking orders from Revan, he was easily enough to defeat her. She'd die. Sion and Malak would clash, and while Sion was amazingly tough and brutal, I imagine Malak could hold his own, maybe even defeat the assassin. The Exile himself would take Nihilus and at least weaken the fool for the kill. Revan's team wins.
Originally posted by Darth_Janus
Hoenstly? I don't either. I was kicking his ass on Korriban and I take Korriban first (Meaning no lightsaber) I was pissed when I was running away. I kept saying "I kicked his ass. Let me go back!"
Now imagine fighting Malak on Dantooine 😛 you would be dead and be dead fast