I think it's obvious how this is going to turn out. Three last men in the rumble: Cena, Orton, Sheamus.
Cena is eliminated, he is shocked, regular Cena loss routine, blah blah blah.
Last men standing: Orton and Sheamus.
Orton wins (surprisingly). So he is going to Wrestlemania to fight the Big Show.
BUT (unsurprisingly) Sheamus joins that feud, and it's 2008 all over again.