For a brand like Atomos to price a monitor up there with something like a Sony BVM (which are considered amongst the top few best monitors out there) is really brave. They must be super confident it's great!
Admittedly it's kinda different - the NEON records too, and will have a nicer User interface... but ultimately it's the quality of the image that matters.
I have always wondered why top-tier photographer/graphic design monitors (such by Eizo and NEC) are not generally as expensive as their video counterparts. SDI and monitoring tools (WFM, tally, peaking, zebras, etc) aside, as far as image is concerned, surely top-tier professionals working with colour grading etc demand similar levels of quality and precision calibration in both worlds?
Maybe refresh rate and stability are big factors. And actually as Matthew says, output power.
Having said that, NEC do have a 27" monitor that is $10,429...
Also, I do recall about 10 years ago when I worked at a major post house, they did have Eizo monitors in all their Flame and Smoke suites. They also had 16:9 Sony BVM CRTs for the main preview, but the working monitors were all Eizo, IIRC.
Oh, haha, and the Eizo CG3146 which is a 31" DCI 4K (17:9) HDR reference monitor is $30,000, but yeah - same ballpark as Sony's top BVM.
Funny old world!