I hate comparing records from now to back in the day

[Master]

Outside of the heavyweight division you could compare fighters at the lower weights and speculate how they would do in 15 rounds or same day weigh in which are some of the major things that have changed in the time period.

I know championship fights were changed from 15 rounds to 12 mostly because of safety....... but have many times wondered how certain classic 12-rounders would've finished had they gone 15.

Many of those old time 15-round classics actually needed all 15 rounds to produce what was the final outcome. The Thrilla in Manila comes to mind.

Rocky would never have become champion, Leonard would have lost to Hearns so big difference's in careers and history.