There's a reason why women almost always look goofy in action scenes. There's a reason why women almost always look goofy when they attempt to strike a badass pose or when they attempt to wear a badass face.

It's the same reason why men seem goofy when they pitch up their voice, prance around, and shake their butt while walking.

Cool is an intrinsically masculine trait. Sensuality is an intrinsically feminine trait. Women find cool men sexy. Men find sensual women sexy.

An attractive scantily-clad 110 lbs woman dropkicking a 220 lbs man isn't "cool," it's just sexually enticing to men. Not because she's dropkicking a 220 lbs man, but because she's scantily-clad and attractive. A rectangularly-shaped woman dressed like a man, smoking a cigar, and carrying a machine gun isn't as sexually enticing to men, but it's just as goofy because the woman is posing as something she naturally isn't. Some people may mistakenly believe she's cool, but only because genuinely cool male characters from past movies were able to successfully pull it off (e.g. Dutch from Predator).

This is why male heroes in film are infinitely better than female heroes. That's not to say female characters can't be interesting. They can be interesting, but only if their femininity isn't down-played. For example, Olenna Tyrell from Game of Thrones. She's not attractive, however she did attack her enemies using feminine wiles: psychological warfare, subterfuge, and poisons. That's way more interesting and believable than anything Brienne of Tarth did. Brienne of Tarth looked goofy as hell.