I agree that the speed and quality of the film makes a big difference. I adjusted a few recent fights to look like films from the early 1900's. Bernard Hopkins looked like a modern Jack Johnson with all the clinching he did against Calzaghe while Calzaghe just looked silly with his slapping punches. Mayweather didn't look too great keeping his hands at his waist and it was easy to miss whether a punch landed on him or not with his shoulder roll defense.
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