GREQ
Headphoneus Supremus
I haven't listened to the 1.0s at any great length, but the 2.0 over-ears have treble, but they have no air (they are rolled off at probably around 14 kHz ish). After you hear any pair of Audezes, you'll see exactly what is missing about any of the Momentums (and most all other headphones) straight away.
That's a bit of a broad sweeping statement.
Have you heard the EL-8 closed-back? If anything, that's an example of an Audeze headphone that has quite a lot 'missing'.
LCD-XC isn't exactly a shining example either.