Hi qycusa,
Unfortunately … looking for a “similar” mattress in the current Kingsdown lineup or with any other manufacturer would be purely subjective and only your own testing will really be able to tell you which mattress feels similar to you in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences) regardless of whether it may feel similar to someone else.
The information you posted is all about marketing and says nothing that would be helpful or meaningful for a particular person in the real world.
This is just a marketing tool that is used to “lock you in” to a Kingsdown mattress (see post #2 here) and really only tells you what you can already feel with careful testing and says little about your alignment on a mattress. This would be something like using a machine to tell you what a food tastes like or whether you should eat it.
There is more about “matching” one mattress to another in post #9 here but Kingsdown doesn’t generally provide any meaningful information about the materials in their mattresses so it’s not really possible to match one of their old mattress to a new one based on specs or design. I would also question the wisdom of using a Kingsdown mattress as your “target” since this is one of the manufacturers I would tend to avoid in the first place (along with any manufacturer that doesn’t disclose the quality of the materials in their mattress).
I would strongly encourage you to read the tutorial post here which has all the basic information, steps, and guidelines that can help you make the best possible choices … and know how and why to avoid the worst ones which would include any mattress where you don’t know the quality of the materials inside it and are forced to make a completely “blind” purchase.
A forum search on Kingsdown (you can just click this) will also bring up more information and feedback about them as well.
Phoenix