The Phoenix 5 vs DC Team

P5 have telepathy, TK, Magik and Emma both showed some sort of cosmic fire, and most likely a boatload of other esoteric energy crap they could spam to fill the area with AOE blasts. Speed wouldn't really matter then if the blast is covering the entire arena they're fighting in with cosmic fire.

DC TEam in a stomp here. This is kinda spiteful.

Another thing to consider here is if you do manage to take one of them down, the power just moves to the other remaning hosts. So you still get the whole power of the phoenix 5 until you take em all out while other teams weaken when each member falls.