Besides the 4 "kings" putting Floyd down-( Hearns, Hagler, Duran and Leonard), Benitez if he showed up in shape was too slick for Floyd too
The Sugar Ray - Hagler fight is still very controversial- I watched the fight and still think Hagler got screwed. Hagler was an animal in his prime, Ray Leonard was great , but no Marvin Hagler.
Floyd in the late 70's and through mid 80's has possible 5 losses.
People can speculate all day who was the greatest ..... compare styles.... make predictions based on this and that but it all comes down to the human element -that can't be "predicted" with a lot of accuracy in my opinion. Ali on paper against Liston or Foreman was a disaster... look what happened, Marciano ran the table against older competition granted but if he never would have fought Louis or Walcott or Moore or Charles somebody SOMEWHERE would have said Marciano was too small, too easy to hit, cut too much.... yet he did win.
Just saying it's very difficult to make predictions when dealing with people, who knows maybe Floyd runs the table in the 80's because the other mentioned fighters bring out the "hidden" monster in him that has not HAD to come out yet