Team. Marr and Satele together would give Vader a good fight, even win; add Lana and its solidly in teams favor. While she's mostly fodder here and could get wiped by TK, I don't see Vader doing it through Marr's and Satele's assaults. Assuming this is their "prime" iterations, Satele's teleportation will be helpful, and Lana would be able to do shit with her lightning and shit.