Does Trump still think that? The last couple days, he's been somewhat lamenting the fact that he did not do more in that regards, in Iowa.
Granted, he or his campaign people may have thought it wasn't worth it, and by the time it became evident it could be, it was too late.
OTOH, can Cruz maintain the intensity of his ground game in Iowa, through Super Tuesday? It seems unlikely, even if he is leaving Iowa with a fistful of $$. Those $$ don't compare remotely with what Trump could bring to bear, if he wished.
I was predicting a Cruz win in Iowa for a couple of weeks. Of course, I could be wrong, but I think it's a one-off.
I know his passionate supporters love him (and I hate the way they respond to criticism of him), but he comes across as a wierdo and the Christian schtick that was so important in Iowa blocks many states from consideration in November.
I just don't think he can win a single state that Romney lost, and that (therefore) nominating him would be a serious mistake.
If Trump really has a glass jaw, we'd better find out right now. I hope that's not true, but the evidence of the last few days is not reassuring.