Well, I respectfully disagree.
They are the only two who have a chance at beating Hillary.
Cruz would be great, Palin would be great (but I think she won't run), and if Walker goes for it, he could be really good as well.
Friend, there isn't even a slight comparison between Cruz and Christie. They're as different as two politicians can be, while still being members of the same party.
They're not going to poll anywhere near alike, a year from now. They speak to two very different mindsets, and will attract very different supporters. That's IF Christie even tries to run, after being sunk by 'bridgegate'.
And the way the two men stack up against the eventual Dem front-runner will be very different, as well. If the GOP-e forces Christie to the top of the heap, we'll be looking at another Republican loss, which will be nearly unprecedented. That's how badly he'll do among the conservative right, who will likely stay home, rather than give him their vote.