Bungie's Masterworks for Armor idea is a HOAX!!!!! It was a last ditch effort for them to try to keep players playing after their SHITTIEST UPDATE since Destiny 1 inception...
Masterworks Armor was ONLY supposed to be for reducing incoming damage when using your super. Well I found/upgraded my Masterworks Armor with my spare cores from breaking down WEEKS of dumb guns that were pointless to wait for - ALL to die EVERY TIME I USE MY SUPER IN 1 DAY! DONE... I'm done with Destiny. Bungie - you SUCK MAJOR ASS!