Yeah, I agree but it's not just the dodging bullets, inertia, physics problems, etc. alone, it's also the player's experience, skills and quick decision making. Yes, problems exist, but the problems are not the only thing that keeps you alive in DayZ. It's the Player's Experience and Skills also play a role. Aside from superhuman dodging, I have good reaction and reflex and am good with melee weapons in general, the guy wasn't that good with his gun, tbh, or didn't know how to handle the situation better. I've been "killed" by experienced players who knew how to aim, shoot or handle it better when I was attacking them with a melee weapon. In the video, if I was him, I'd mostly likely would "kill" the stick guy despite all the current issues. But of course, it'll change and get better.
In a perfect situation, Experienced players with Good Aim should be able to stop the melee attackers from a fair distance before they get too close. And Experienced Melee fighters should be able to knock players down in full contact. In other words, there should be a Good Balance or Experienced Player vs. Inexperienced, plus Being Smart & Lucky. Making a mistake or outsmarting is the thing in DayZ.
And, we also shouldn't forget the "Gun vs. Knife" and the 20' rule. Knives are deadly if you're only 6-10 feet away from the gun man. Bullets don't always stop the attacker. Guns are tricky. Especially if you're inexperienced and in stressful situations.
You're right, I really liked what you wrote and I agree with you.
Experience and how to stick is not discussed are part of the player's baggage.
Let's hope, however, that arms relations are made better in such a way as to have a reality closer to the real one:)