Vitiate's Dark Council vs Emperor's Wrath II, Darth Nox, Lord Scourge

Who wins?

If Team 2 still loses, throw in HoT and Kira Carsen.

Trio

You're going to be specific. I'm going to assume that you mean the 12 strongest members of all time, sans Nox, in which case DC stomps

There's not that much of a difference. Most Council members are pure unknowns. We have weaklings like Xedrix and Vowrawn on the Council, as well.

Considering that even novel Scourge one-shotted Xedrix after being downed by Xedrix's cheap-shot Lightning, it wouldn't be difficult to imagine Xedrix being killed by a mere bolt of Lightning or a telekinetic wave in the Force power crossfire.

Agreed, that still doesn't mean that the DC team will have anyone like them. Personally I see it consisting of Thanaton, Marr, Arho, Nyriss, Jadus, Baras, Arkous, that's already more than enough to take out the trio, add any five and it's just a stomp