While Marco Rubio was born in the US, but his parents were not naturalized citizens until after his birth, he shares the same disability as Obama. Neither is “natural born”.
Stipulating for the moment that Barry's alleged narrative is true (I doubt it) Barry would have ONE US citizen parent compared to Rubio’s ZERO US citizen parents.
This is a distinction which may or may not amount to a difference, depending on what SCOTUS should rule if a case came to them.