When I'm evaluating players, I'm going to be looking more at dominance against peers, rather than size and strength. I'm sympathetic to the argument that with advances in weight training, better nutrition, advanced medicine, etc., yesterday's players would be every bit as big, strong, and athletic as the guys today. Therefore, I'm looking at skill and ability to perform against their era's competition.
Edgar and Dons may see it differently, but from where I sit, older players don't have a built-in disadvantage. In other words, just because a guy is 6'9" and 215 pounds at center doesn't mean that I'll assume he'd play at that height and weight in the "modern age".
(It's scary to think what that means in the case of a guy like Wilt Chamberlain, who already had stellar athleticism, even compared to many of today's players.)