the b&b pose is unnatural. If you're

the b&b pose is unnatural. If you're in the middle of a fight like most of the heroines or about to enter a fight you wouldn't do an uncomfortable position that you need support to even manage in the first place, you'd turn around completely. Comics are supernatural and amazing but its more fun if you think it's even remotely possible to be a superhero, and the b&b pose that's some of it away.

Yup.  It also takes some of the fun away if the scene is making concessions in terms of poses, expression and angles in order to show breasts, or butt, or show the butt from a lower angle, or have the heroine in porn face, etc…  and  it can also be quite jarring and take the reader out of the scene all together.  It’s hard to be taken in by a dramatic death or injury when the scene looks like it was traced out of porn.