In my opinion, its not OP and shouldn't receive a nerf. But because it will get one, here's what I think. Make Sunbreakers take more critical shot damage. This would nerf them in PvP, but not a lot, and mostly keep them the same in PvE. I believe this change would make it so Sunbreakers would be easier to kill, but only if you were a semi skilled player. People would no longer have to haul ass when they hear a gong, and the general strength of the super would be maintained. This is only if they get nerfed. I don't think they need one.