Re: And the winner of Royal Rumble 2013, is...
Daniel Bryan! *clap clap clapclapclap*
He's over, it would be a surprise, fans would eat it up, he'd put on a great match, and he can easily be built to be credible enough for a title match at Mania (hell, he had one last year). It's also an easily written storyline since he lost his title at Mania in 18 seconds last year so it's sort of a redemption thing. That would also give him a reason to chase the WHC instead of the WWE belt which would likely be held by Rock or Punk.
That said, it'll probably be Ryback. Or whoever is feuding with the WHC at the time.