Yes every class does have # perks to alter their super, grenade, and melee. They also have an arrangement of passive perks. Gunslinger only has 2 that has to do with their super. Sunbreaker has 4 and technically 5 because most of the fire kills come from hammer of sol. Plus Voidwalker's passive perks that pertain to it's super also boost their combat ability which balances the perk making it half super, half combat therefore not really a game changer but reliable.