This right here. Everyone was expecting to faceroll them like we did for the past 16 months overgearing every single "expert" dungeon SE released. Once HW hit, everyone gets knocked down a few pegs and forgot what it was like to be on the same ilvl as the content you are completing.
That, and bad dps could kind of sneak by in the older dungeons due to gear inflation. Now that everyone's rotations have become more complex and you can't rely on the gear crutch so much - we see a lot of bad dps creeping out of the woodwork.