I've been a titan main since the beta. My opinion is that the damage resistance should be nerfed down to the same as a stormtrance lock. There are probably a few skill tree adjustments that should've been made before launch. If you look at the sunbreaker skill tree you will notice it has hardly any passives, almost everything revolves around the super thus making the super ridiculous. At this point tho I believe that a dmg resistance nerf is all that bungie can do.