HHH can pull off the Indian Deathlock (Anyone remember when he was using that?).
I'll say it again (and it pains me to say it). But if WWE is that serious about Orton, then he should win. No one would see it coming (Even less when Randy has been treated as an afterthought) and it would legitimize Orton in the eyes of the fans.
I mean, think about it... Orton loses to HBK by DQ, beats him but gets Superkicked afterwards. Only retains the title against Y2J due to JBL, beats Jeff Hardy clean, then gets DQ'ed against Cena. Randy has yet to have that one defining win since becoming the champion. So why not let him get that defining moment by beating both Cena and HHH at Wrestlemania?
All of a sudden, Orton is a wait for it.... A CREDIBLE CHAMP. And besides, its Cena and HHH are top stars, even if they lose it won't affect their standings in the eyes of the fans.