I hardly think you can argue that slicing a person up with a garden shears is less brutal and more (or equally) humane than a lethal injection.
If we're talking about psychological stress of the murderers, sure I agree. It's much less traumatic shooting someone than cutting them up with a chainsaw. And it's even less traumatic to a murderer to watch someone killed by poison or neural toxins, than by shooting them. Surely the outrage over Manhunt would be a matter of killing, rather than the graphical nature of it? Surely the problem with murderers is that they're leaving behind maimed corpses? (I doubt you'd be laughing if you saw someone enjoying a video of a kitten being chopped up while alive with a garden shears, for example).
No. I'd report them to the police, as actual (non-virtual) animal mutilation is illegal in this country. I mean we're even concerned about how well pigs are transported to the slaughterhouse for crying out loud!Also, it annoys me that people never point out the positive aspects of violent videogames.