Just keep in mind that hundreds of the Dylos meters have now been sold into the woodworking community, and I'd imagine at least 20+ people w/ CV cyclones also own one or more (yes, I know a few people with multiple) Dylos meters. Also consider that I know at least one owner of a CV cyclone that has access to commercial-grade particle counters, as he works for a large HVAC manufacturer.
The vast, vast majority of people w/ particle counters and dust collectors using cartridge filters found that, the longer the DC units ran after machining, the more the air quality in their shop improved. Those that found otherwise often found holes in their filters, or other leaks on the pressure side (and those issues were typically addressed). And I'm not just talking about CV issues, I remember the threads (and calls) about the time the Dylos meters first shipped, people were discovering small problems with all makes/models.
So when someone comes along and says "hey this thing is returning 20x the dust as brand x," and that it isn't even working as well as single-stage units, well, that doesn't make any sense whatsoever, right?
If they were to instead say "something was wrong with ours, maybe a leak, and we couldn't find it," that would be quite a bit more honest (but perhaps a less interesting read), IMHO.
My dad (as I said, he was a journalist) once quipped that the only thing a manufacturer likes more than a favorable review of their own product is a unfavorable review of the competition's. And I imagine this review of the CV will be used extensively to sell against it. Which is a shame, because it doesn't provide an accurate indication of how well it works.
All just my personal opinions, of course.