Considering no one was really truly outstanding in the world cup and he still did better than all his mains rivals from the club season for it, Messi is probably the most deserving of it.
I'd assume it'd be Messi-then Sniejder/Villa/Forlan/Xavi as the next 4 in whatever order really. Iniesta, Casillas, Puyol will probably all make the top 10, with something like Rooney and Ronaldo rounding it up or something.
Personal preference would be Iniesta or Rooney everytime, but neither deserve it at all, top 10 is fair for both.