SWTOR rips them each a new one, then penetrates and come out the other end.
For me it goes like this
Wrath vs Kas'im. I'm thinking this would be a decent fight but would eventually come out with Wrath winning.
I'm thinking it's Thanaton vs Bane is next, and it would probably go to Thanaton if he can keep his distance, for the most part. Thanaton's Force mastery is vastly greater than Bane's, and he has sufficient defense against melee attacks with shields and barriers.
Nox vs Zannah is an obvious matchup, with Nox having everything Zannah has and more and being multiple times more proficient in every one of those things.
Lastly Baras vs Raskta. Baras can probably hold his own long enough to wait for backup from Thanaton or Nox, but otherwise would lose in prolonged combat.