He is an ignorant, incurious, anti-intellectual, self-absorbed, inattentive and easily distractible, inarticulate and generally uninformed man who seems to lack any capacity for self-reflection or contemplation. None of that makes him a mental midget.

Maybe not, but of course most of your first sentence descriptors above include indicators of such incapacity. I agree, though, that he is not a mental midget as to ability to sway an audience and capture a sentiment in the culture. And then again, after his series of bankruptcies in the 1980s and 1990s, it was only Mark Burnett who resurrected trump with the Apprentice (likely without which we would never have had president trump) so we would never have gotten to see those talents in the way we have for a decade now.

If you ever watched Game of Thrones, I'd put my money on him doing well in that game of wits over any of the more intellectually accomplished folks I've known over the years.

Again, I think that is right for many of the "intellectually accomplished" since so many of them also have a moral compass of some kind. But to take it back to Game of Thrones, there are a lot of "folks" that would make mincemeat, figuratively and probably literally, of him, all of which I'd put money on above trump. I would include Tyrion, Cersei, Littlefinger, Varys, the all grown up Sansa (at the end of the series), and my favorite, Olenna (played by the wonderful Diana Rigg).

Pete