As I stated, that's an issue I had with the LCD2 closed was that boost in the highs that made things sound unnatural as seen here:
Personally to me, they look to be slightly V-shaped with accentuated highs. This is why I said they get close to neutral, but they aren't quite there.
The Elegia, is much more linear but has that mid range push (just a few dB) before it starts to slope down up top:
Now, we compare that to something that is considered neutral to many, the HD 650:
The Elegia has a lot more in common with the 650 than the LCD2. Not really apples to apples, but I think that says something at least how they measure when you factor in differences in dB overall.
The Elegia, overall, looks and sounds much more natural and linear to me. Again, they reproduce what a cello sounds like. The LCD2 closed did not get this right especially when it came to conveying texture. Maybe I'm more sensitive to that instrument as my wife plays, but I know for a fact the Elegia reproduces what I hear when she's practicing compared to a recording of Yo-Yo Ma.
But, seeing as you like Beyers, you may just enjoy that emphasized treble. Nothing wrong with that, just preferences. I have not found a Beyer I like as their overly sharp treble is grating to my ears.
The Elear, I agree, has an interesting sound due to a sharp drop-off it has in the upper mids. But, just because they aren't neutral, doesn't change that they are a sound sig I enjoy. I have many many headphones and IEMs and neutral isn't something I always shoot for. The TRX00 Ebony's aren't neutral, nor the TH900, but they are still great sounding cans.
And yeah, these are all just my opinion as well, but I can't agree that the LCD2 closed (or the LCD-2) are neutral. They don't sound bad or anything (just their mids are off to me), but neutral they are not, IMO.