Could the Nova's armor be bugged? It makes no difference whether I fight with or without armor, you get excessive damage. Something has to be done. 220 dp with lv 58 and Gahaz Kill me with 3-4 Hits? 

that is because 220 dp isnt armor, its paper towel.

I believe 220 Armor is around full PRI gear isn't it? Hard hits from Gahaz at that DP is to be expected. Especially if you're crowd controlled.