Yeah, there is something seriously wrong with the musculature of those women's legs. Womens' legs, even heavily muscled ones, just don't work that way.
The basic problem is that women still retain a female curve, even in hideous bodybuilder mode. The only way you
don't get that is with boyish girls with flattened shapes, but that body type is irreconcilable with a hyper-muscled one.
So if you give a female model over-muscled thighs, those thighs still need to be quite wide; in short, the problem is that those barbarian women have no hips or asses.
Of course it's possible Tre has "a thing" for this look... he'd hardly be the first sculptor to sculpt "what he likes"...
