Your argument seems to be that warlocks are overpowered therefore other classes need better armour. That misses the point. The classes are well balanced. If the classes were not balanced, gear would not be the way to address that. And I am referring to specific anomalies in balance affecting certain items. Clearly, this is a case of some tweaks being needed to improve armour balance, and clearly not a case of Bungie trying to use gear as a way to balance classes as you suggest.