Well, interesting comments. Generally speaking you simply can't compare older athletes with newer. A world class 100 meter sprinter in 1940 wouldnt make a high school team in the 90's the times tell the truth!. a football lineman in 1950 weighed 240 pounds IF HE WAS A BIG ONE!! now they are 340 pounds and O linemen up to 400 lbs the old super duper star couldnt make any nfl team now!! Any sport with a quantatative measurement, ie a time, makes the point clear. Try weightlifting for example, Old benchpress records or 600 lbs are now up to 900 lbs!!! Put Ali in a time machine and bring him in his prime to the year 2007 he wouldnt make the top 10. Same thing if you bring him ahead 15 years to fight Holmes....i dont think it would be a contest. Now, if you had them all born and raised at the same time..same training, nutrition etc......a whole new discussion..