Yeah. If no one else was in Cruz would win !
Any assumption all support or even a majority would go to Cruz is delusional. It’s been proven support gets dispersed and some just drops off.
I am too lazy to get the link but if you go to RCP there was an ABC poll out today that showed Rubio and Kasich votes would go to Cruz 74 to 14 I think. Also showed Cruz killing Trump one on one.