Homer aside as much as possible it should be RG3 hands down.
Luck leading the lead in INTs. Enough said. I don't care that he throws more then the others. Watch some of his picks. More then half are complete AWFUL throws. Sure he's a rookie but you don't see Wilson or Griff making throws that bad.
Wilson has the benefit of a great running game AND a stellar defense. Griff has just as good of a running game but our D is downright brutal at times (first Giants game).