You make an interesting point about bonus points, but I think Gable is on Mocco's level. He put up a lot of bonus points in his career. Including a Hodge trophy.
I think you could make the same point about Lee and Mejia in terms of getting a lesser guy to AA status. Could we have not gone after Lee and instead went with Mejia and made him a multiple high AA? Sure could have. But we went with the guy that's going to win multiple titles.
I see your side, but the drop off at 125 isn't much from the elite to the 10-20 range and beyond. Mejia would have to beat some hammers to AA no matter what. There isn't the talent or depth nationally at heavy that I'm aware of coming through the HS ranks. AA spots will be ripe for the picking for anyone who puts in the work.