* Heavy-duty capability: Power Wagons are designed for off-road work and heavy-duty hauling, not passenger comfort and family transport. This is reflected in features like high ground clearance, heavy-duty suspension, four-wheel drive, and robust construction.
* Utility over passenger capacity: While some models might have had rear seating, the primary focus was always on cargo capacity and ruggedness, not passenger comfort. Traditional station wagons prioritize passenger space and comfort features.
* Evolution of the name: The name "Power Wagon" stuck even as the vehicle's design and purpose evolved. The early post-WWII Power Wagons were much more closely related to military trucks and less to civilian passenger vehicles. The name simply continued as a model designation even when designs changed.
In short, the Power Wagon is called a "wagon" more for historical reasons and its body style than for its actual function and intended use. It's closer to a heavy-duty truck than a passenger-focused station wagon.