You have a good point, and one I've heard Rush make several times. And in all fairness his hearing prevents him from debating mono on mono.
But I'm going back to his TV show days. He never had guests. I've seen him on Meet the Depressed maybe once. I've seen him, was it on NBC(?), as an analyst during the 2004 election. But that aside, I listen when he has liberal callers to his radio show and when they present points of view Rush is not prepared for I am left less than impressed with his interaction. On the other hand Tony is able work through moonbat talking points and really demonstrates the fallacy of their arguments.
I think the best analogy is that Rush is an entertainer, like he often comments, and Tony debates moonbats without putting everyone to sleep. I equate that to a higher IQ but I could be wrong. Respectfully.
Thumbs up!