From personal testing I've noticed that when using civi models they will always die from a single pistol shot to the head from point blank range. Helmetless Blu/Opfor always require two shots to the head. I assume it is because different damage values are assigned based of different uniforms along with other equipment.
Basically what I'm getting at is that your video shows damage output from one type of weapon against a single type of load out and your response features hyperbole.