Political bias aside, Rush is great at talking but I can't see him as an interviewer. I don't see him asking questions, waiting for answers, then asking another question. Rush has the answers already, and isn't the kind of guy to sit on them. He's tremendous in his own forum. And Meet the Press isn't it. And I think Rush would be the first to agree with that, because if nothing else he's honest.
Rush sells opinion. He does it well. The demo he pulls on his product is not the same one NBC is marketing for. IMO