I agree with Prax. WWE is almost being too obvious (which again, agreeing with Prax, could be a big swerve) by repeatedly saying how the cage "guarantees" no interference from Nexus. How many cage matches have we all seen where outside interference happened? Either with all the Nexus climbing over the cage and into the ring to destroy one or the other, or both, or the simple, but classic, bolt cutters on the chain locking the door.
That being said, I really hope Sheamus comes out on top. Like a lot of others have said, Cena can be occupied with getting revenge on Nexus for the next month or so without being in the Championship picture. Having him in both story-lines (Nexus and Championship) monopolizes too much content with one person. It also forces people that should otherwise be feuding with the champion to have to help him due to Nexus, which just muddies the water even more.