I used Fireteam Finder and asked for meta loadouts as I JUST figured out what weapons to use for the final boss of Vespers Host. Me and this one person with Grand Overture carried someone who was using a legendary machine gun for damage and I also asked for people with knowledge of the encounter. And didn't even know that damage phase started at one point (thank God I was on PC and was able to type). That's beside the point. It didn't even take a full damage phase for the 3rd time around. We killed Atraks almost immediately as damage phase started. It could have been an easy 2 phase had the 3rd person have the meta loadouts or close to it. Unless you're talking about the comparison of scaling with solo versus a three-man, then it is a 3 phase with the standard three man. Edit: I like how this is a PSA that if you take more than 3 damage phases with a full group, your group is the outlier and not part of the standard. No insult or anything. It's just facts.