The problem is that with pretty much every weapon you do more damage aiming for the body, but with vertical attacks its almost impossible to not hit the head without aiming ridiculously low. This is honestly borderline a bug
My favorite part about this is that apparently these dregs can only afford Carapace Helmets (you’d think these would be as rare if not more rare than Carapace Cuirass), and that somehow the 100 damage they’d take to the body gets reduced to 4 when they’re hit in the head, as if they suddenly gained immunity to blunt-force trauma because they’ve got a 4+ save instead of a 5+ save.