Very well said Mufasa. Christie like Perry will look good to the republicans until he jumps in. Perry faded because he had a tough time in the debates as he lacks that type of experience. Christie's uphill battle aside from also having little debate experience is that he has a has record, and other certain beliefs hat would make Romney look conservative.
I'm going to go out on a limb and predict that Christie will not throw his hat into the Presidential ring for a few reasons:
1- He's not quite three years into his term as Governor of NJ.
2- He and those around him understand that he leans center left on social issues and that's not going to be popular in the primary season.
3- He has a very serious weight problem and that alone could prevent him from keeping the torrid pace that the candidates need to keep. Most people don't realize that Presidential candidates are working 16 hour days while sleeping in hotel rooms and eating on the fly.
What Christie might be doing is making himself available for the bottom slot on the ticket. Christie just turned 49 in September that means that he will be 50 years old at election time. He could serve 4 or 8 years under a Romney, Perry, or whomever and only be 58. He would also have that time to reduce his weight and gain a ton of foreign policy experience which is currently his weak suit.
Naturally this is all speculation, but it is fun to speculate that's one of the reasons that we're all on PWI.