Why does Wits make Crits more likely? Because you are smarter and can aim better for vital spots. Rage is more the opposite of Wits, so rage should not give crit, just increase damage. If you are enraged, you hit harder and not smarter.
Crippling blow just means for me, that you aim for the legs, so I wouldn't count that as that much technical. But stuff like Ricochet probably does fit less to an enraged player.
