I was playing World At War split-screen with a couple friends, and the following happened:
Friend 1 comes up behind friend 2, and proceeds with unloading with a browning (he's about 20ft back)
Half a (huge) clip later, F2 has turned around at full health after taking 20-30 bullets (I was standing inside a building off to 1 side, so I saw everything from a better perspective than them), and starts shooting back with a semi-auto (Gewer I think, maybe the Carbine). He empties 2 full clips.
F1 has now emptied the full clip, and fired about 50 shots from the second.
Both stop shooting and just rush each other, still at full health, planning on a knife kill.
Both friends hit the other (not just swing, actually hit) 3 times. F2 backs up a bit, though whether for some space or as a result of the fight I can't remember, then swings out (by accident I think) without closing again, and gets the kill. I could see them through a window approx 50 feet away, and play enough CoD to know that the knife does not have a 10ft range ...
Final hits (taken) tally:
F1: 14 bullets from a semi-auto, and 3 knife hits (which should be insta-kill)
F2: Approx 120 browning bullets, and 3 knife hits
Long story short ... WTF?!