If Merc can give him the car the technical team should be able to produce, then I think we'll see his final season in 2012 end with a couple of wins. He's back, let's put it that way. If you take away the incidents he's had this year and take into account the points lost, then he'd be miles ahead of Rosberg in points.
OK his qualifying is still a bit suspect, but don't forget that this was never his strongest point anyway, unless he was in the fastest car.
I think even in qualifying, he has closed the gap to Nico. Hope he gets a better car next year that will help him win a couple of races, maybe that will motivate him to stay beyond 2012 for a championship challenge in 2013.