Two people with shotgun melee usually shuts it down, unless defender is smart and steps out and in quick enough or knock back knocks him out, full auto shotguns also devastate, or literally any other super lol, if they nerf it in any way then the bubble will be pretty well useless. As far as the totems go, it has more to do with the damage reduction from the sword than anything else, in normal pvp a truth shot can be survived only if it hits the opposite end assuming you are on the edge of the interior, and at that you'll be in the red zone of your health

Armor of light requires you to stay inside, if you move even a tiny bit outside you can get killed just as easily as anybody else. It is only useful as a tactical deployment in 1/10 circumstances, such as OP's video, because otherwise you can just completely avoid the bubble since they can't move out of it. By the way, armor of light lets you survive much more than an annihilator totem- You can also survive corrupted light explosions in oryx with a sword and armor of light. Also, just use any super to pop the bubble, the only ones incapable of that are blade dancer, defender, and I think storm caller. All other supers have ways of popping a defender bubble.