Objective measurements of a headphone just hint at how that headphone will actually sound to a particular listener. We shouldn’t confuse charts and graphs with a truly objective evaluation of audio equipment.
An objective evaluation involves listeners dispassionately hearing how the music sounds to them.
Especially if your ears have a history.
Every Audeze headphone I’ve heard has struck me as muffled and dark, inferior even to AKG 701s. The Sennheiser 800 HDs have never sounded sibilant or excessively bright to me. I found the Hifiman HE 5s to be only slightly inferior to the Beyerdynamic T1s.
But then, my ears have been over the road.
So I’m not particularly swayed by the objective measurements of the AKG K812. Sure, they’re a start, but I may very well be immune to the “confusion and harshness in the treble” Tyll writes of. You may be too.
So I think all of us whose ears are past their pristine state need to listen cooly, clearly, and calmly to how we hear the music.
But then this is obvious, I hope.