I'd respect that in Rush if I believed it of him, but if I'm correctly remembering his words in in 2007 2008, including "If McCain wins the nomination, it's the end of the GOP," he BASHED McCain back then.
I think Romney amd Romney's supporters intimidate Rush's self-confidence in a way that neither McCain nor his supporters ever could.
I don't buy the notion that Rush is intimidated by anyone. He's at the point where he's like mountains that are so big they make their own weather.