Sith team win.
Krayt and Malgus are no slouches when it comes to saber. especially Krayt. Force-wise it's just a stomp, since Kenobi really lets the team down. He'd get rag-dolled all over the place by the two Sith Lords which leaves them to clean up Satele.
And I don't think Obi-Wan could last long enough against the sheer saber assault of the pair of them without getting tired enough himself, regardless of his mastery of Soresu.