Also the actual specs need to be shown better.
Take the tow ratings for example. It meets spec, of going 40 mph up a 5% grade at 109f temp, can pull gcw from a stop up a min 12% grade. You or I jump into the truck, much less a known lead foot like grit. Said rig doesn't go speed limit if 60, or pull from a stand still an 18% grade....said truck doesn't meet owners drivers needs or specs. Their is no how much to derate or increase actual rating to meet those that have tougher needs than some engineer/bean counter/attny/gvmt spec.
At the end of the day, many including myself have had to figure out the hard way, if a truck is up to the task I have at hand. Ie the day a 2500 pulled a fully loaded 3500dw truck up a 20+% grade. On a freeway the 3500 left the 2500 behind .....but I could not get to the last 200 yds to jobsite!
This happened more with trucks in the 70s to 90s.
Reality is, I know where to find specs, formulas to figure out max speed at a give wt, with given frontal area, and max grade I can pull with out stalling out!
Choose your truck wisely! It may turn out as in a few cases for me, the lowered rated truck is the better option!
Marty