FYO, what I am saying is that athletes of yore were conditioned in the way that athletes from yore were conditioned. Could Jesse Owens have run with Usain Bolt if he'd been raised in our environment? I think yes. Are you saying no?
No, I'm not saying no. You are completely not getting what I'm saying.
It's the
if he'd been raised in our environment that completely invalidates the comparison.
You seem to be comparing some theoretical "raw talent" and presuming that the athletes, regardless of era, "do the same stuff" (put in the same number of practice hours, have access to the same equipment / drugs / whatever, are challenged by the same level of competition from their surroundings). That's BUNK. That's like saying, well, I could be as successful as Bill Gates if only I'd...
And that's just one of the two main issues I see.
The second is the size of the talent pool and the efficiency of "the system" (High School, College and NFL) in isolating the most talented players. Clearly, the talent pool is A LOT bigger now and the system seems a lot better at evaluating talent, with fewer biases (racism, academic requirements, etc) along the way. The end result is better players.