Melee dmg is way behind ranged (magicka)
It needs alot of buffing, atleast in PvE.
One part of it is that class skills are magicka while melee skills are weapon crit, making melee users unable to focus on only light or medium armor, or use potions that buffs both those stats.
Its also much easier to reach higher crit with spellcrit due to sets and buffs.
And magicka users dont need to use stamina for anything else then dodging.