I agree with that, but I think everyone keeps underestimating Trump’s abilities to connect with the American electorate.
Trump has “won” the debates by votes being cast before the debates even started. He is popular with his fan base, but the battle is for the undecided voters.
If I am an undecided voter, I am not going to be persuaded by attacks on Bill Clinton’s sexcapades or Hillary’s bathroom breaks. I think those people want to gain some understanding of a candidate’s knowledge and positions on the issues.
I don’t think Trump is particularly knowledgeable in many areas. It has been obvious even in the debates so far and will only be magnified if he goes one-on-one.