Floyd Mayweather with his official (i say official cause for me he is defeated) undefeated record, winning against famous opponents like de la Hoya or Canelo, a long with his rare defensive skills was considered of by many not only the p4p best boxer in present time, but some even said the best boxer ever period.
Now the interresting comparison. Ronda fought when the division was just getting started. when female fighting was new and lots of c quality females were fighting or totaly unathletic female fighters like that goblin Bethe Correia or female fighters who did train 50 % of the time and still working a job aside from fighting, so semi professional. Once female fighting got more professional and elite competitors came along like pro female boxing champion Holly Holm Ronda started losing badly, cause finaly she wasnt facing opponents who were training while still having a job.
Now you gonne tell me, what does that have to do with Floyd. How can you compare boxings famous ww division with emerging female mma division?
the answer is, there is no clear comparison, but i want to point something out. Ronda was considered a mma female godes, #1 ever. now people are questioning if she is even in the top 3, with cybord, nunes or holm
Floyd Mayweather was at ww, when most top welterweights were old, old mosley, old hoya or retired. Imagine Floyd in the prime Tito, prime Hoya, prime Mosley, prime Forrest, prime Wright, prime Vargas days