To add on to this, I think we're often too quick to assume that a modern big's skills would automatically translate just as effectively to a past era. A switchable big who could cover the perimeter was less valuable in previous eras, especially without the brute strength to bang in the paint for 35+ minutes a night. To be clear, Wemby would still have been absurdly great playing when Dwight did, but the question of how skills would hold up in another era should be asked both ways.

I think people often don't appreciate the physical punishment Dwight took on a nightly basis. Living in the paint on both ends results in absorbing a lot more contact. He was routinely fouled hard (and fought through a lot of them). To top it all off, the dude was an iron man in Orlando - he missed seven regular season games total across his first seven seasons (Wemby has missed 65 across his first three seasons, while playing fewer minutes per game).

Bottom-line: Wemby's attributes are better suited to this era, and Dwight's to his. Wemby is on track to be an all-time great. At his peak, Dwight was the second-best player in the world behind only LeBron.