I think the iron banner is being handled pretty well. If it were totally unbalanced in favor of the decked out being nigh indestructible, then it would close off its accessibility and be barren except for the high level twinks looking for an easy win. Because face it, that was the first thing that crossed everyone's mind when they read about iron banner. Finding that hapless lvl 5 who happened to wander in and marvel at their powerlessness