Warlocks are masters of shadow and flame can call demons from the burning legion to do their will and have their own class mounts.
Mages are snotty little brats who throw snowballs and a few firballs around and are the best class at running away
Warlocks give thier enemies a quick yet agonising death forcing the to suffer.
Mages give their enemies hypothermia
Warlocks make fire and infernals rain from the skies.
Mages make it snow
also Richard is a warlock enough said