Christie felt he needed Obama for the welfare of his State, New Jersey. The asshole used Christie for the benefit of his reelection.
Christie is a whore.
Doesn't mean he needed to have Obama there for a photo op. Bloomberg was an Obama supporter and didn't do that. Yet, NYC still got aid.
And even if there was some reason Christie had to meet with Obama, there was no reason at all to gush what an "outstanding" job Obama was doing.
In fact, that will Christie as much as it did Romney. As the response is shown every day to be more and more inadequate, the blame will fall not on the feds but on Christie himself. After all he already said Obama did a good job with disaster relief. That means the current problems must be on his end.