I don't necessarily think Vettel would have lost his race lead had that red flag not occurred, but a lot of people here seem to think that, so perhaps no one benefited more than him.
We'll never know now will we? but I think Vettel would have held on; but it would have been a battle especially if Alonso and/or Button were getting better drive out of the final corner and through the tunnel, but that said going offline in the tunnel is a risky business out on the marbles as Massa found out. The only thing for sure is that we, the spectators were robbed of a grandstand finish!
I dunno, His drive through hurt him.
Yes, looking at the finishing times, you could argue that he could have gotten fourth place but I don't believe the drive-through had that much of an effect; given that the red flag allowed Hamilton to close up to Maldonado and the lead pack which I believe more or less negates the drive-through Hamilton received!