We shall see. My theory stays the same for now, he’s the most dangerous threat to Cruz.
I see Rubio as a stalking horse for Jeb, with a veep prize if he can take Cruz and Walker out.
You are, of course, welcome to your own opinion; however, Marco isn't as as an "attractive" candidate as you suppose he is to many. And his flip flopping, saying one thing in English and another in Spanish doesn't help him any. Throw in the fact that the Bush team is now going after him, tooth and nail, and they just may take each other out....sooner rather than later.
But yes time will tell.