Everyone seems to agree that Wiz have more utilitie tools then Warlock. Many seems to say that Warlock have betther DPS only bcuz their is more Fire/cold immune/resistant mobs then Poison/Disease one. So if they create raid with balanced resistance betwin elemental and poison/disease. That would mean that Wiz>War ?
Maybe not. Warlocks can cast faster than wizards, and if they rebalance resists they might not do it to the point where wizards have the advantage. It's not a black or white change.