A lot of those audiophile terms are mostly bullshit but those reviewers say that they are less dynamic than other headphones, and I don't really know what they are referring to.
I wanted to test this for myself so I bought an Audeze LCD-5 and a DCA Stealth and used both with an RME ADI 2 DAC.
Both headphones were more than loud enough for me from the RME.
The DCA Stealth have a lot more bass than the LCD5 according to the measurements but on my head, the Audezes just sounded more powerful and punchy. Much closer to what speakers sound like. The DCA bass sounded ''gentle'' in comparison.
I don't wear glasses and have very short hair. The LCD-5 has a pretty strong clamp but the DCA has almost zero clamp.
My guess is that this is the reason for the difference. Also DCA headphones use a lot of damping in front of the driver the Audeze has almost nothing.
You can call my findings subjective BS but when multiple people report similar findings there may be a small chance that there is something going on.
My advice is to try both preferably at home at normal volumes.
Crank up any of these excellent headphones to 100db and they're going to sound impressive. My question is how do they sound at normal listening levels.
The Audezes were engaging and fun, the Stealth not as much so I returned the Stealth. I can afford to keep both but there was no chance the Stealth would get any head time so it was a waste to keepi it although it is gorgeous and a piece of art IMHO.