Ranger is not there for damage until you get that machinegun skill, but for control.
It has like a dozen of arrow types suited for every situation.
Smokescreen Arrow + Air damage = AoE stun
Poison Arrow + Fire surface = GAS aka mega explosion of damage
Freezing/knockdown/stunning arrow lock out someone for 2 turns
Utility and versatility, but it will get damage too once you grab machine gun and a tenebrium xbow.
