"Baffle them with bullshit" has been a saying for quite a while. But with Trump it's more like "give them a stupidity migraine." The stuff that comes out of his mouth hurts my brain to hear it.
You can't help but to try to parse some meaning out of his words. They sound like English. But he assembles them in an arcane order where the harder you try to understand him, the less anything he says makes sense. He is like a human word cloud where you just have to infer the message based on the biggest, boldest words.
So yes, it's hard to beat an opponent in a debate when you have to try to understand what he's saying in order to form a cogent counterpoint. His audience of the hearing- and vocabulary-impaired only absorb the gist without ever attempting to parse actual meaning out of it.
It is truly a thing of wonder, and if the future of our nation didn't hinge on it, it would be fascinating to explore. I hope future generations, unburdened by the threat of another Trump Presidency, might be able to study this and harness this power for good.