Poor reaction time maybe? I have been shotgunned to death trying to shoulder charge a defender in his bubble or when in mine the Titan managed to get me. If we are talking regular Crucible Shoulder Charge one shots all supers, but so can Blink Strike with its exotic (correct if wrong please but swear I have been stabbed by blink as Sunbreaker and was merc'ed). If it's Trials/Iron Banana even with the Grieves there have been many times I have not one shot a Guardian and the difference in my light and theirs is 4% at most which shouldn't have them have full Heath but no shields. Instead of calling for more nerfs, how about just having your class updated? I say roll Armour of Light & Blessing of Light into one perk because I always found having both kind of redundant but to balance it out when you leave the bubble the shield decays. Create a whole new perk that's got mobile defense. Maybe give everyone an overshield that's 80% as strong as Blessing of Light that's near you that can be recovered withing X amount of time so long as it isn't broken.