I wouldn't be surprised if they went up against each other. They don't have enough big money draws in the full-time roster to make a match like that not worth putting on. Who do they have? Punk(and he was never in the main event unless he was paired with Cena or Rock if I recall), Cena... and who else? Granted, a lot can happen in a year, but I don't think anyone else can really draw people in en masse right now.