Thing is....it's been quite a while since I heard the Abyss or LCD-4. I cannot reliably recall. To my limited audio memory, the Abyss does soundstage and detail better than the Verum. The Abyss has the most realistic stage I have heard, very 3-D. It beats even the king of soundstage, HD800, where it sounds wider but flatter in comparison. But the Abyss' mid is drier than the Verum. The Verum has more addictive mids. And I would say, the Verum doesn't lose out much on the bass too (probably equal or similar). And I consider Abyss and Audeze as kings of bass.
I remember the Susvara pretty well. But I'm too tired to compare it. Gotta sleep. Let's just say I prefer the Verum sound. Like I said, the things that the Verum does well, to me, is where it counts the most. Timbre, dynamics, and bass. Imagine a smooth flowing Audeze with better FR. Hits really hard when it is needed. Does hard rock as good as female vocals. The hifimans are just not there yet in this regard. They are after a different kind of sound. They don't have this solid body of sound like the Verum. This is man's territory.