this most likely is a 5 ton gross truck. With this PU bed and crew cab that leaves 2 ton of carrying capacity, which is 4400 pounds (legally) but they are built to take a ton extra in Asian countries, with poor roads.I'd much rather have a regular flatbed that can handle weight, but you're right, that is something you don't ever see.
I honestly feel the Isuzu truck line is one of the best for the the medium duty trucks (if not the best).
I've never seen an Isuzu NPR with 4WD, only the Mitsubishi Fuso in that same style. Does Isuzu make/import an NPR 4WD in the US?