Team Darth VadervsTeam Plo Koon

Team Darth Vader This is actually a good fight, can't decide...

Meetra has defeated Nihlus
Revan and Caedus are on equal terms with Revan being more experienced and Caedus being the most powerful, Revan would take the win though.
Kyp CAN beat Vader, his force powers are way too OP for Vader to deal with them.
Plo has beaten Yoda in lightsaber combat, He can't beat Mace but he can definetly beat Marka Ragnos.

Shimrra and Marr would definetly lose, the question is who lasts longer... Ragnos or Shimrra and Marr...

I would give a victory with a 6/10 advantage to Team Nihlus.

I would say Ragnos would fall to Plo before Shimrra and Marr fell to Starkiller and Windu, I think they could hang in there a good amount of time, until Plo Koon comes to their help, maybe Marr falls to Mace but at that point it will be Shimrra and Plo vs Mace, who could hang in there until Meetra Surik comes to the aid.

Once Surik, Koon and Shimrra deal with Mace, they'd split for the other 3 and they'd fall in short order.

Team Plo Koon Darth Nihilus v. Darth Caedus^
Revan^ v. Meetra Surik
Darth Vader v. Shimmra Jamaane^
Starkiller v. Kyp Durron^
Marka Ragnos~ v. Darth Marr~
Mace Windu^ v. Plo Koon
—————
Revan v. Darth Caedus, Kyp Dutton^
Mace Windu v. Shimmra Jamaane^

Team Plo Koon Now this right here, this is a true collection of overrated (team one) and underrated (team two) characters.