Few keepers should be in there, Habsi should unquestionably be in there, ridiculously good keeper, Vorm, Krul and De Gea aswell, all have pulled of excellent save after excellent save all season long.
Welbeck shows purely that if you aren't in an established top 5 team, you have basically no chance at all.
Parker isn't having a bad season at all but the last couple months he's been below his best. Tiote should just be on the list, no question about that. Ba should as well, fantastic striker, while some people have been banging on about his lack of goals, only recently, his actual contribution has been right up there anyway, really excellent interplay with Cisse, without Ba Cisse and Arfa wouldn't have looked anywhere near as good.
Mata should be on the list as well, as always, joke lists in general, at least RVP is on there and they didn't make a mockery of that as well. Welbeck shouldn't be near it, while I really like Ox, he shouldn't either, he's barely played really, 466 minutes AOC has played and gets on the list.
Dempsey, and maybe Larsson should be on there as well, like others have said, no top 5, no chance of winning it.