The fact that the whole subclass is based around the super. Check its passives. Not a single one provides any major benefits without it. Other classes have passives that boost abilities on their own. Without the hammer, the Sunbreaker has Lift, a grenade (Not a bolt grenade), and a God awful melee; that's about it. If the hammer gets nerfed, the entire class gets its wings clipped; but if others get nerfed, they can brush it off with relative ease because of those passives. The issue is, people don't read the class as a whole, and cry for nerfs without taking a second to think logically for a moment. Not surprising, given the player base, but even then you'd think someone would have some common sense.