I think the perception that he gave Obama too much praise during Sandy will hurt him more than his weight.
In my opinion he showed the President Respect. He praised Obama but blasted Dem Mayor of Atlantic City for disobeying his orders. He's doing what's best for his people, frick politics at a time like this. Just like people in Joplin came together after the Tornado, Republicans, Democrats, etc. No time to play politics. Christie shows respect to people that deserves it no matter if they're D or R.
Rep Long, Sen Blunt both Republicans showed Obama a lot of respect during our disaster. But down the road they were back at bashing him. You do what's best for your people.