Hi anotherscott,
As I mentioned previously, I don’t advise to put stock in “reviews” like the ones you mentioned, but you’re of course welcome to ascribe any level of importance to such “reviews” as you personally see fit. I’ve been quite consistent here on the forum that you are the only one that can feel what you feel on a mattress and I would be cautious about using anyone else’s suggestions, experiences or reviews on a specific mattress (either positive or negative) or review sites in general as a reliable source of information or guidance about how you will feel on the same mattress or how suitable or how durable a mattress may be for you. In many if not most cases they can be more misleading than helpful because a mattress that would be a perfect choice for one person or even a larger group of people in terms of comfort, firmness, and PPP (Posture and alignment, Pressure relief, and your own Personal preferences) may be completely unsuitable for someone else to sleep on (even if they are in a similar weight range). In other words … reviews or other people’s experiences in general won’t tell you much if anything about the suitability, quality, durability, or “value” of a mattress for any particular person (see post #13 here).
Most “reviews” are generated in the short-term by people unqualified to render an educated analysis of a product, often complaining about things that are not actual warrantee concerns, or complimenting and ascribing benefits that have nothing to do with the mattress. A group of six "reviews’ out of the thousands of mattresses a company would have sold doesn’t amount to anything I would consider relevant, meaningful or worthy of consideration.
And then there’s the issue that’s been coming to light recently more and more about how these “reviews” are being manipulated by competitors and posted under false identities. A current notable example would be the daughter of Ghostbed’s CEO posting a false review on amazon under a fictional name against Purple (see the court documents here, item 39). With so much money at stake in the growing boxed-bed category (and affiliate marketing), more of this is being exposed.
Regarding durability, there are many other factors involved in the durability of a mattress besides what can be measured with a rollator test (see this article).
Phoenix