Units with stainless doors and /or heavy duty glass frame construction have higher HP rating on the compressor with better insulation.
Because grocers use glass door freezers that are opened and closed all day long and it doesn't seem to be a problem.
Most reputable manufacturers have a logo at the topleft corner of the unit. Many offbrand Chinese manufacturers don't have a visible logo here.
Most front of the house refrigerators were designed to be (1) cheaper and therefore lesser quality components, (2) less insulation and therefore more packing. Because it was designed to hold drinks. You can tell this, namely in that it has a sliding door mechanism, which is standard across these units. Heavy duty glass kitchen refrigerators are always hinge based, namely because you need to load / unload quickly and have extra space accomodation
What you see in the grocery store is a whole different level. Whereas most standalone glassdoor units like this are self-contained refrigeration, the ones at the grocery store are generally remote-based compressors. They operate at a much higher efficiency, HP rating, and run at a higher voltage.
I think their hub model is pretty sound provided you can satisfy the regulators.
It might not be rated high enough, but you can't tell from this picture.