I'm sticking to my prediction from about 4 months ago. Surprise entrant Undertaker wins then challenges Punk for WM.
WM streak vs Title Streak.
Mark me down.
I say this, or a huge swerve. The loser of Rock v Punk enters at 30 and wins. How they build up to mania i have no idea, but possibly leads to punk losing the title before mania due to the Undertaker.
There's only four people i can see winning though;
Rock, Punk, Undertaker or Orton.