I actually admire Santorum's ability to fight the big guys. He's kind of like a cat that gets cornered. Fight, fight, fight.
But to actually say that his Republican rival is no better than the other party's nominee is hitting WAY BELOW THE BELT.
https://washington.cbslocal.com/2012/03/22/santorum-might-as-well-have-obama-over-romney/
Odds of Romney picking Santorum for VP: a trillion to one.