Looking at old Pele videos, he looked and moved drastically different than his contemporaries. His acceleration, balance, jumping height, and ball control look absurd to me. That's also factoring that balls were harder to deal with back then. I think the whole "Pele is from the 60s he wouldn't make it today" is exaggerated. He does not look out of pace compared to modern footballs to me. I think he would have been world class if he played today. Then again like Nadal says: "if if if doesn't exist."
You can compare historical figures to their contemporaries, not their successors. It's like saying Newton wasn't one of the greatest mathematicians of all time because he didn't have quantum mechanics or all of modern mathematics in his disposal. Whereas Terence Tao mastered all of that by 18. Or Chopin being a shit pianist compared to pianists today because most of us learn Rachmaninoff's 3rd concerto when we're teenagers, whereas a piece of that difficulty never existed by the time Chopin died.
It's a dumb conversation. Compare historical figures to their contemporaries, not their successors.