I don't buy it. Trump is a known quantity, one of the most famous men in America. People polling for him know what they're getting, and they would tell you his "strengths" have nothing to do with a presidential debate. If any of the GOP candidates fall into the trap of trying to out-debate Trump with facts, intellectual arguments, etc, they're screwed. That's what he wants, because he knows the people who will vote for him don't give a damn about the content of the debate.
Exactly. Trump fans still dispute Obama's birth certificate as a forgery. They still consider him a Muslim despite a whole lot of evidence that he's very faithfully Christian. And that's even before you consider the hilarity which will be
GOP candidates [...] trying to out-debate Trump with facts, intellectual arguments, etc