it's a submission match...i assume it's no DQ. So he can beat Show the same way he beat Umaga a couple of years ago. He couldn't apply the STFU correctly on Umaga so he got a rope and wrapped it around Umaga's neck while doing the STFU. Umaga passed out after a minute. Cena wins and Show never taps.
I can't see their story ending at the ppv. Cena isn't near the title picture at the moment and I don't know who he would work with since NoC coming up in a few weeks.
Orton has Batista, Triple H, Kennedy, and Flair already in the picture. I'm guessing they're trying to save Batsta/Cena 2 for Mania.