Malgus kills Vader in a matter of few seconds, during which Sidious takes on Dooku, Maul, Savage and Asajj. I guess Dooku and Maul are good enough to stop Sidious from instantly killing Savage and Asajj, although Palpatine will still obviously hold the upper hand. And Savage+Asajj are kinda tricky, they require Maul and Dooku as superior combatants to hold Palpatine from slaughtering them, but are good enough to be pretty useful against Palpatine, especially since it's 4v1.
I guess that while Palpatine probably kills Asajj or Savage when Malgus murders Vader, Palpatine will soon be forced to face Malgus+Maul+Dooku, in which case Palpatine goes down.
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They are angry because they have been forced to recognize that their hour has arrived; that the time has come to surrender power to Shimrra and the new order."
Probably the Banites because Sidious can remove any of them with the force, and then outduel them while Vader can mop up.
__________________ "Happiness is a lie. Life is horror. The light is always dying all across the universe. The last star will flicker out someday, when it does, all that remains is shadow. And I will be its king!"'-Amahl Farouk
It's a close fight. I'll Go Sidious and Vader because Sidious has a good chance of eliminating some of the weaker members of team 2 early on. If Malgus, Dooku and Maul get Sidious and Savage and Ventress get Vader they've got a good chance.