It was the worst "Presidential Debate Performance" of all time, because one of the participants (for the first time in televised American presidential debates) refused to go along with the charade. These were never debates; they were always scripted spectacles designed to orchestrate a pre-selected result. And the latest debate wasn't any more of a real debate either, except we got to see that plainly for the first time. You can't call it a debate when one participant is clearly cheating (wired, coached, drugged, and provided questions in advance), and when the moderator is actually doing more debating than one of the candidates. So, ya from that point of view it really was the worst presidential debate of all time. Because somebody just revealed what a scam these debates always were. And that is a very big win for the People, indeed.
Ya it looked like they made POTUS a bit green, rather than his usual glorious "golden" hue.