Pre-20 your ws's do equivalent damage to any jobs. Pre-50 your melee hits, although not as often, will still do consistant damage. At 50 you gain Defender, which should be kept on at all times. This reduces your dmg done, making melee strikes tougher to keep a mobs attention, and reducing ws damage further.
Darks 'should' not ws more often than you early on. There ws's will be more damage, but you will be accumulating tp from getting hit and hitting. Before 33 when melee have access to a real acc weapon, the amount of hits landed will remain consistant.