He does?
Of course.
The entire nation saw the debate with Biden.
I don't think anyone, no matter how partisan, would disagree, his performance was the key factor in causing the shift in candidates in the DNC.
Likewise, when the entire establishment thought it was the most foolish idea that he would ever become the GOP nominee, it was, more than likely, the GOP primary debates that convinced most voters, not so much his rallies, that he was the guy that could defeat the democrats.
IMO? You are just being a hyper-partisan Trump hater blinded by your loathing, if you don't want to acknowledge the facts.
Bear in mind the example of that Kennedy Nixon debate where the folks that listened to it, supposed thought Nixon won, but those that saw it, thought JFK was the winner.
Trump, as we all know from his decades association with movies and his show the apprentice, is an entertainer first, and a policy wonk second. TEE VEE? It is about coming off as looking and sounding good. This is why most times, the smart money is on Trump, regardless of whether you like or agree with him. It is just about acknowledging who THE NATION thinks appeared better. . . Not who YOU liked better.
FACT: His debating has resulted in him being the GOP nominated presidential candidate for president three electoral seasons in a row.
FACT: His debating has resulted in Biden be pulled from the DNC nomination for president.
All I'm doing, is acknowledging the facts, and what the nation feels. Sorry . . .