Joe Rogan said that the first time he got on stage to do stand-up comedy, he was more afraid than the first time he fought.
Rogan did say this, but only about his first time on stage. In the transcript he says he was more afraid the first time he got on stage than the first time he fought, and that it "was nuts". He did not say stand-up is scarier than professional fighting in general, and he said "first time I fought," not a pro bout. The claim stretches a one-time comparison into a general rule. A different passage in the episode where Rogan says stand-up is scarier than professional fights in general would flip this verdict.