My gosh, I read through the whole thread up to your post. Nowhere is there anything from a Trump supporter either "saying Cruz can't win" or bringing up the negative attitude Trump supporters endure from Cruz supporters.
By doing this, you're avoiding discussing the issue at hand. It does seem to be a tactic of Cruz supporters lately. JMHO
You need to read more on FR. Trumpskis are rabid in hatred for Cruz, and repeatedly say he can’t win.