So that guy is basically saying that it should be around about 50% for a headshot, what a load of crock... I'm sorry but a headshot should mean instant death, shooting someone in the head is a fatal wound! Just shows the arcade mentality of BF3/4
Whatever you think the balance of the game should be is irrelevant - what he is showing is an actual bug that could be caused by the game incorrectly calculating damage, could be caused by bullets registering hits multiple times... that is far more ****ed up than the weapons not being balanced how you like them, the game is enough of a joke as it is without adding bugs that are undermining the basic core of it being an FPS.