Event scaling for legendary opponents

[Awn.1327]

Ever since the September patch, there seems to be something seriously off with event scaling specifically for legendary enemies. They die much quicker since before and die considerably quicker than champion rank enemies in the same event. I am rather positive that this is not due to power creep - at least the DPS meter for the 50 people squad does not report anything out of the ordinary. This happens at least for the Ley Line Anomaly boss but I've also experienced it on a couple of other legendary NPCs that die waaaaaaay quicker.

Am I hallucinating?