Hell look up the specs on any truck and we can find equally very low or high worthless GVWR based payload numbers.
Case in point is a F150 with a 3200 lb payload sticker. There is no F150 anything that can carry 3200 lbs in the bed without exceeding its RAWR. About the most any F150HD 4800 RAWR can carry in the bed is around 2400-2500 lbs.
Or a GM/Ram owners bragging about his hemi or 6.0 gas truck with a 3640 lb payload sticker. Again....there is no 2500 Ram or GM truck with enough RAWR to carry 3640 lbs in the bed. And about the most a 250/2500 gas trucks can carry in the bed is in the 3200-3300 lb range. Same with the diesel powered truck
Looking at mfg payload specs one finds what one wants to find with any brand trucks GVWR based payload numbers.