Hi TorontoCT,
Your “theoretical” mattress includes good quality and durable materials but you didn’t mention any of the specs that relate to comfort and firmness which is the most important part of how a mattress will “feel” and how well you will sleep on it and PPP (Posture and alignment, Pressure relief, and your own Personal preferences) and how well you sleep on a mattress is the most important part of a mattress purchase.
While knowing the specs that can affect the quality and durability of the layers and components in a mattress is always important … unless you have a great deal of knowledge and experience with different types of mattress materials and components and their specs and different layering combinations and mattress designs and how they combine together and can translate them into your own “real life” experience that can be unique to you (which would generally be a very small percentage of people) … I would tend to avoid using complex specifications to try and predict how a mattress will feel or perform for you. When you try and choose a mattress based on complex combinations of specs that you may not fully understand or only based on specs for single layers or components that may not be as relevant or meaningful as you believe it is then the most common outcome is “information overload” and “paralysis by analysis”. Even the best mattress designers in the industry are often surprised at what a mattress they design “should have felt like” based on the specs when they design it and what it “actually feels like” when they test out their new design.
The only way to know whether any specific mattress design or combination of layers and components is a good “match” for you in terms of comfort, firmness, and PPP with any certainty will be based on your own careful testing and/or your own personal experience when you sleep on it.
Having said that … you can see some general comments about the properties of an “ideal” mattress in post #4 here.
Phoenix