Agreed.
Superhero movies have that built in 'REASON' for why a man, woman or child, or Raccoon can pull off these huge feats.
I've said it before that Superhero movies took off largely as Action Movies just had no where else to go generally. The feats that Bruce Willis (Diehard) and so many other actions hero's were pulling off had gone into the absurd and fans, like myself, were starting to get pulled out of the action as you said 'wtf' to an otherwise normal human pulling that shit off. We liked the increasing action scenes getting bigger and bigger but we needed (i needed) a reason as to how these men, women, children were doing those feats.
Enter the Superhero genre. Action can now be ramped up to infinite levels and a reason can be given to suspend relief.
The main reason women struggle comparatively to men (Atomic Blonde V Wick) outside the movie being inferior is not the level of jackedness but just the comparative lack of skill to do the moves and make them look real. All the manlet action stars can look as believable as some giant ones because they have the skill to do visually pleasing moves. If women can do the moves at the level of a prime Jet Li, then most people (I assume) are ok suspending belief and going on that journey regardless of the level of jackedness or gender.