Yea... The thing is that sunsinger can really only use grenades and melee ability wise. I do feel like the sunbreaker's abilities mainly evolve around its super though. Whether it affects the super, while its charged, or when you kill with it. Grenades are nice and melt. Is good for pve... But otherwise it mainly revolves around the super. So nerfing the super more than needed basically means that the whole subclass is affected, since most upgrades revolve around the super.