The super is strong, definitely, but not OP. They get 7 Hammers if they spam that trigger as hard as they can and have the perk on. Not to mention, they only do it once or twice per game. Its not like blink shotgun where they can literally do it all game, every game. They have two passive perks in the whole tree, one of which is quite useless compared to the other choices. They trade all around usefulness for 20 seconds worth of damage. Sunbreaker requires you to charge head first into battle with your hammers, you cant snipe people across like Golden Gun or throw grenades from behind cover like with Radiance, thus the higher than normal health benefit. The Sunbreaker is fine the way it is. And before anyone calls me biased, I main a Warlock.