In the essence of avoiding an argumentative tone, I can see that the spacers provided for the base plate frame on the B & W Companion allows for a greater bearing surface area that helps spread some of the loads to the under-bed cross members.
When I was searching for a suitable 5th wheel hitch after I got my flatbed truck, I did notice and consider the RVK 3050. Unfortunately, the footprint wouldn't fit into the GN ball cutout. I have one of the higher-end CM truck beds, and footprint of the hitch was about 4 or 5 inches too much. This led me to believe that the RVK 3050 was really aimed toward the more specific 5er truck beds that have the slot from front to back. Otherwise the footprint is larger than most flatbed truck cutouts.
If B & W was smart, they'd work with CM Manufacturing to develop a better system for flatbed trucks.
