That is ridiculous, Patterson was the heavyweight champion, and very fast. Mayweather could be faster, but he would not have the power to hurt Patterson, and if he got hit he would collapse like a cheap lawn chair.
Comparing lighter weights to heavy weights, is never going to work which is why they never fight in real life.
Are you aware that Floyd Mayweather boxed at 125 pounds in the 1996 Olympics and won his 1st professional world championship at 130 pounds?
Patterson later fights in heavyweight. He lost to Ali when he is no more in his prime. Mayweather is faster but Patt is stronger.
Patterson is a lightheavyweight, Mayweather is a welterweight.
Mayweather is too small
In his prime, Patterson
the speed and power would go to patterson if in prime