The highlighted section interests me. Let's say you compare a guy from the 1920s top 10, and a guy from the 2020s top 10. What would you say to a critic who denies that they're "comparably good opponents" in the first place? There are certainly people who believe that the 1920s heavyweights were just plain bad fighters. So it would seem to be difficult to establish the initial assumption that the two eras are comparable. Thoughts?