WHY is FLOYD NOT the greatest boxer of all time?

PBF sites his record as 50 - 0 proving he is best. Yet Chavez went undefeated for 90 fights (89?) before he lost his first fight! If only a fighters record prove his greatness JCC beats Floyd. But there is more to greatness than that. Tyson says Floyd isnt great because he isnt liked, because he cant walk down the street without a bodyguard. Tyson says Ali could and he (Tyson) still can. Both are loved. Teddy Atlas Says greatness is facing adversity and finding a way to win. To get up and win when all seems lost. Ali did that v Liston, Frazier, and Foreman. Chavez did it v Meldrick Taylor, and arguably Whittaker. Did Floyd ever fight an all time great and have to dig deep to come back and win? Quality of opposition. Did Ali fight in a better era than Floyd? Did Chavez fight PFP better opponents than Floyd? Fight style. Who was it that said Pacman beat Floyd 'because all floyd did was run'? Floyd was a boring fighter, so bad people wanted to see him get beaten. Does that count against his 'greatness'? Ali was great to watch during his career. Though towards the end it got pretty bad. I cant remember Chavez being in a boring fight. Fighters opinion. Seems very few actual world renowned boxers rate Floyd as the greatest. Most pick Ali. So, is Floyd the greatest, or mostly in his own mind? .