Of course. Because they’ve learned from Trump not to back down and apologize in the face of criticism. But to double down instead.
The difference is of course, that Trump doesn’t do really stupid things.
FWIW, with early missteps in the Trump campaign, he found the source of the problem and re-arranged his staff accordingly. Trump solves the problem instead of apologizing for it. Cruz in contrast is owning a very bad decision that was made.
On a sliding scale, he hasn't done something this offensive (for want of a better word), yet, but his campaign hasn't been perfect! He's abandoned a few false taunts, for example, "Cruz could be Prime Minister of Canada."
Trump has a long history of doing stupid things. He's an immature, phony, potentially dangerous jerk. Cruz at least 'gets it' on the complex situation in Syria, regarding Russia's broader (expansionist) agenda there and elsewhere. Trump either doesn't or is in cahoots with Putin on it.