Dindus are not the largest. You're confusing lower body fat and more definition with size. White guys like Shaw and Thor have a much bigger frame and bone structure than a guy like Malone. Malone also ate well to get to his size and lifted weights etc. But he can't ever be as big as the larger framed white guys. There's a reason WSM has been dominated by white men. Whites have bigger frames and can lift heavier. Blacks run faster.
Imagine trying to lose weight to get to 400.Shaw=Legend.