I suspect that catalogs are prepared by marketing staff.

If you are lucky they checked the numbers! The rest why bother?, write some statement subcooling liability!

Don't get me started with subcooling I don't think the compressor should account for it, unless it has a particular desing characteristic like intermediate pressure port.

So why use it to select the compressor, leave it as part of a safety factor because errors estimating load can be large. Even if they are not large the load usually increases with time.