You missed a trick not naming this thread Fat Man And Little Boy.
Even in the (possible, if unlikely) Christie winning NH scenario, I'm really not sure where his campaign goes from there. This schedule this year is shockingly hostile to him.
He pulls the McCain one-two.
South Carolina:
Chris Christie: 28.4%
Marco Rubio: 27.9%
Ted Cruz: 24.6%
Donald Trump: 20.7%
Other: 0.5%
Nevada:
Marco Rubio: 25.8%
Donald Trump: 25.7%
Chris Christie: 24.9%
Ted Cruz: 19.9%
From there, CHRISTIE can sweep MN, MA, VT, and make attempts in CO and AK. If he wins ME and comes second in both LA and KY, he wins HI and MI. On March 15, he can wrap up the nomination with Illinois, Ohio, and Missouri.