Say what you want about President Trump, and I have some heartburn with him, I have to admit that seeing a 70 something year old man deliver an almost 2 hour speech is remarkable. Vice-President Biden is what, 10 years older than Trump? I don't think Biden would have the endurance to go for 30 minutes, tops.
I happened to see a segment on some TV show this evening and it showed a picture of President Trump arriving at the White House after the Tulsa event. His tie was off, he had his shirt unbuttoned, and he was carrying his red hat. The talking head was describing him as looking depressed and defeated. I saw a a man in his 70's who had had a long, long day. Anybody would look beat, not beaten.