I think that the comparison to the female character designs in OP are pretty absurd. A male character being drawn to be strong, powerful and showing off his muscular build is not sexualization, thats showing how badass he is, its a male power fantasy.

This tired argument makes their own biases so obvious. A male character being drawn to emphasize their masculinity is seen by the arguer as not-sexual. A female character being drawn to emphasize their femininity is seen by the arguer to be explicitly sexual. It's projection.

A female character being drawn to be "strong, powerful, and showing off her muscular build" would be called sexualization by this same person. It's their own stereotypes of men and women that make them interpret one as sexual and one as not. They think being sexualized is intrinsically female so it's a perfect circular logic in their minds.

Hancock is drawn hot. Ace is drawn hot. Cry more.