Construction comparison
Orthopedic vs standard foam: is the label measurable?
"Orthopedic" describes an intent — support for joints and pressure points. It is not a regulated term, and no test certifies a bed as orthopedic. What you can compare is the construction underneath the label.
What "orthopedic" usually means in practice
In this group, beds called orthopedic use one of three constructions: layered foam (Big Barker's 2"+3"+2"), a memory-foam top over a support base (Casper), or a single solid piece (K9). The label does not tell you which one you are getting.
A bed called "standard" could be a flat foam pad, a polyfill cushion, or a thin crate mat. The word says nothing about thickness, density, or durability.
The test that would settle it
Foam density and firmness (ILD/IFD) are the numbers that separate a supportive foam from a soft one. No brand in this group publishes them. Until that changes, the honest comparison is structural — layers, thickness, sleeping surface, and warranty — which is exactly what the eight-bed comparison shows.