That's an interesting perspective on performance for me as it parallels one of the aspects I enjoyed about performing stand-up comedy regularly for a time (primarily at open mics): getting to observe/analyse/theorize what contributed to whether a particular "bit" "worked" or not--both for myself and others.
For my own performances, I could choose a different word, phrasing, tempo etc and see how/if that affected audience response.
Equally, learning from observing the impact of when other performers did the same, refining their set over multiple weeks.
And, then, also seeing how other factors we had less control over (you know, such as the audience :) ) had an impact: sometimes same line, same delivery, might kill one week but got crickets the next.
Granted, my approach to comedy might lean a little more... analytical than some. :D