Cruz explained to a donor in a private conversation why he thinks he’s going to win. Then he expressed his admiration for Trump in public. That’s duplicitous to you?
Cruz also said that neither Trump or Carson had the gravitas or judgment to be president. This was in a donor meeting. When confronted about it on Kelly, he denied it, until an audio of the meeting showed up on the net. Duplicitous? At the very least. Backstabbing and cowardly? Yes. Say what you want about Trump, he puts his feelings on Everything out there!