Hi dccurly…
The questions that Phoenix asked are not really answered by that link. It shows pretty pictures that describe all the layers but there no discussion about things like wire gauge on the coils, the exact thickness of each foam layer, the type of foam in each layer including density, etc. That being said, I did find an older forum post that discussed a different model in the Lumina line (Spirit Plush) model:
https://forum.mattressunderground.com/t/new-bed-too-plush
If you look at the PDF on the Sherwood site, the Spirit looks like the next model up in the line from the Pegasus. I think that thread is definitely worth a read.
HTH