I thought it was Prime Ulic, lol. In that case, Nox wins a decent fight and I'll give the Sith the benefit of the doubt and say they progress to 3.
There, they win via power abuse (Depa and Obi-Wan are easy pickings for Nox, First Son etc.) Mace can beat anybody there but he can't carry his team. They progress to round 4.
Prime Luke could comfortably take on Nox and Wrath if he's not holding back - maybe even Thanaton as well. Jaina definitely takes down the First Son and comes back to aid her uncle in slaughtering the Sith.
They get humiliated in the bonus also. Yoda takes on Nox and Wrath at once while Jacen kicks the First Son's ordure up his ass and Cade brings down Thanaton.
Vodo probably beats Thanaton. He's not as powerful, but he isn't so far off that he'd get dominated, and he does have access to anti-Dark Side powers. Then there's the fact that he's just a better duelist.