An interesting question drifterlee.  I'm sure there are various opinions as there are various levels of violence.  Which is more violent, a picture of someone plunging a sword into the chest of a living thing or a picture of a dead thing next to someone who slayed them?  I would think the first case to be more violent.  However, if in the second case the deceased victom was depicted in a gross decapitated manner such that their condition was gruesome, like a chopped off head with oozing blood all over the place and veins dripping it out (eww), then I would consider that to be overly detailed violence for some.  Perhaps if we could see what the entertainment industry defines as rated PG, PG13, and R then we would have something to measure by.