On large teams I think the "cherry pick" workflow (Gerrit style) beats the "pull request" workflow (GitHub/gitlab style). On smaller teams it's the other way around. I think it's somewhere around 10-20 people actively committing that the cherry pick workflow comes out ahead.

This is exactly it. When I worked in a ~10 person team I just didn't get it, PRs worked quite well (with some basic discipline, they're not perfect). When I moved to a... much larger company... I don't know how PRs would work here, it would be way too unwieldy. The Gerrit style works fantastically here.