Wanted to get some opinions. I've been running heavy armor on my mag dk, and its great open world, but in BGs i have a harder time getting kills. Now some of this can be contributed to people spamming mages fury, reverse slice, ect. to get the kill even after you've done the work. However, the few times I've tried out light armor I've doubled my kills. I think this boils down to the base penetration that comes with light armor passives since honestly my spell damage is about the same in light or heavy.
I do use ele drain, but is that enough penetration in a BG on it's own? For one thing it takes up time spamming it on a group before I fight them, and I have absolute zero penetration on targets I haven't applied it to while I'm in heavy. How large of a factor does penetration play in no cp, and how much is enough?