If two mattresses measure the same, will they also sleep the same?You can never state so until extensive, double blind tests are conducted. And since you can’t rely on long term sleep memory, quick sleep testing has to be done without the knowledge of the participants, who must be moved from bed to bed as quickly as possible ( or just raise, jostled and replaced on the same mattress).
Only then, after all the data is compiled, can one state which mattress is better than the other, or, just the same as any other, well made mattress.
All the best,
Nonoise