Not necessarily sure you're wrong. I used that online tool- turned out to be only for reference to guage the trailer size versus payload on the truck, not actual payload of the truck- and yeah, it includes a 150lbs driver, but also rates all passengers as 150lbs. I took my truck with a full tank right off the dealer lot and weighed it. The available payload on the door sticker compared to the scaled weight subtracted from the GVWR was plus or minus 10lbs. If Ram includes a 150lbs driver for the payload sticker on the door- I think they would be the first, but I may be wrong. Who knows. Maybe the weights on my truck are all screwy. I do know a 150lbs driver is included when determining the GCVWR of the trucks. This is true in GM, Ford and Ram. GM, Ford, Toyota, Nissan, no others include a 150lbs driver in the payload sticker.