I think Henry will get the job too, not because he is better than Mitch (I think they're fairly even in coaching talent), but because the way Mitch treated the union, the sponsors, and some of the players won't be forgotten easily.
I don't think that anybody was fooled by that bs media onslaught Mitch tried to pull, he obviously still thinks that people in NZ are stupid, and just because he smiled for the cameras now when he's fighting a loosing battle, doesn't mean that in say two years time he wouldn't revert to the old Mitchell (an arrogant prick, and not that great a coach imo), and they'd be screwed because it'd be too late to replace him.
I don't think the union will take that chance, given that there are more than a few members of the board out for his blood, and the fact that he publicly stated many times before the WC that he'd go happily if the AB's didn't win the cup gives them an easy out.
More people dislike him than like him...he will go.
And good riddance I say, results aside, he's made rugby in NZ an even more unpleasant thing than it already was.