It's pretty much Girl Boss the movie. Every female character is the best and baddest. The choreography is just dumb. You have battalion level strength with air cover, and armor and you lose to people charging with axes and laser muskets?? Yes the villagers have guns that look like muskets and fire one pew pew at a time.
The zombies in Dawn of the Dead were a bigger threat than a space faring war machine that has been at war for centuries?
Funny I've been thinking about that King Arthur flick recently, mostly because of Guy Ritchie. Might give it a watch soon, depending on the mood.