It ain't about if he knocks a guy out. It's about how he knocks a guy out. It's the style, the improvisation.
I don't know if it's harder but when you're playing a real person you want to honor their memory - even if they're a criminal or someone that the public loathed. That can be challenging.
I get anxious about a lot of things, that's the trouble. I get anxious about everything. I just can't stop thinking about things all the time. And here's the really destructive part - it's always retrospective. I waste time thinking of what I should have said or done.