Uh oh...
Looks like Dyson didn't send their check in the mail.
In all seriousness, Consumer Reports is not something I personally would rely on. Their testing is for a short amount of time and they rely on their subscribers for their long-term testing, of which the submission pool may be quite small for any given product, so the results from those surveys may skew the numbers pretty badly and construe a horrible product as "good" and vice-versa.
Case in point: My wife and I supposedly own two duds for vehicles, according to CR: me, a 2014 Ram 1500 and her, a 2013 Mercedes C250. Both are on their "Avoid" list, however, both were owned by us since new and both have had nothing but routine maintenance (oh, a minor problem with the wipers on the Mercedes, easy fix and certainly not anything catastrophic). According to CR, we were supposed to have major electrical problems, drivetrain issues, etc.
As for Dysons, I have used a few models of Dysons and think that they do a great job, though not as much as a direct-air machine like a Sanitaire. What turns me off is the construction and the price. When I've used a Dyson, I get the impression of a lot pf flimsiness, ESPECIALLY the ball versions where the brushroll head attaches to the base of the ball. That doesn't inspire confidence that any of those machines will make it long-term. As for the V8 stick models, supposedly many people are replacing their uprights with these, which is unbelievable. I have not used a V8 stick vac but imagine that its performance couldn't be any better than a cordless vac that is half of its price, or even a quarter of its price, and certainly not something that could outperform even the average full-size uprights.