I say the dread warrior word description is fluff which matches most of time as dread warrior is used on 'dumb melee fighters' and thus fluff comes from that. But if you do raise dread warrior from a wizard it is more inteligent than most (it's still dumber than before so it's sort of nerf for spellcasting but sorcerer with above average int score works). Also dread warrior can do ranged attacks.