That’s a very old school view the athletes today would run circles around players from the 60s and 70s. Just like in the NBA. I don’t doubt Brown would have been good today or in the 90s-2000s but there’s no way he would have dominated like he did.Brown would have been the best RB, no matter when he played. The fact is that the competition he played against was the best competition at the time.
There were great player in the 50’s, 60’s, 70’s and 80’s who would still be be great players in the game today. The difference is that players today make enough money to train year round and they have medical care year round and individuals who monitor their diets all the time.
Players who played 40 years ago or more had to work in the off season because they didn’t make enough during the season to support themselves or their families for the entire year.
They played hurt and they played the game when QB’s got hit and didn’t whine about it to the ref. WR’s and RB’s knew when they ran across the middle, they were going to take a vicious hit, whether they caught the ball or not.
The question shouldn’t be if the players back then could compete against the players today. The reality is I doubt if many of the soft players today could have even played back then. Because back then, they played football the way it was suppose to be played and not with all the rules they have today that makes the game a very sanitized version of what it once was.
I should also add that a lot of guys today have help with

