Agreed, it might be a little early based on what he's done so far. But it could also serve as a, hey, we support what you're doing, and the strides you've taken to establish talks with the international community and for raising the status of the US after what GW Bush did. Now, you have the worlds respect and this great honor, lets see what you can do.
Besides, I don't think he'll let it go to his head. If anything, it will push him to work harder and make good on some of these promises he's made.