Sadly, Rubio has revealed that he is not ready for prime time. He’s no Ted Cruz.
I get the impression that Rubio is hot to run for POTUS and that Cruz is not, so Rub thinks compassionate conservatism is his best hope, in Cruz's case it gives him freedom to not be running.
Now Cruz is really sharp. He knows exactly how to say things to cause maximum pain to Dems with minimum backlash. He is NO Akin