I just did this myself on my 54 Juggernaught with Quinn...I don't get where people are complaining about the difficulty, it was pretty standard compared to what I've faced all the way up to this point for a Gold Elite Boss. You just have to, yknow, pay attention. This isn't WoW where you can stand still and spam 2 buttons to win.
There's a deadzone in the middle of the multi-aoe, and it doesn't even hit that hard, and I was still wearing Columi gear from 2012, other than 2 pieces I upgraded via questing. I have no post-Expansion gear otherwise, nor does Quinn. Hell, as I type this I look at my buffs bar and I might have even forgotten to buff myself, whoops lol
I didn't avoid the big aoe most of the time, it was a slight pain but I just charged back in. I missed the first opportunity to bust the generators, all you have to do is loot the Repair Droid with the gold lootbeam and use that item to break the power generators behind him and they'll stop spawning completely, turning into little more than a normal gold mob fight. I had more trouble with the first Iso-5 droid at that point.
Again: Just pay attention and think. Everything is there for a reason, and in this game, by the time you get to this quest, you should know boss fights aren't limited strictly to the mob you're targeting by now.