Putting sticker numbers, Spring packs, Timbrens, Air bags and what's considered legal weight aside for a minute, aren't the two real determining factors what a truck can handle the GAWR and the Max tire weight rating with the tires truly being the weak link because the axels can really handle more than their rating? Maybe I'm missing something but if I had the same E rated tires with weight ratings of 3,750 pounds on a 3/4 ton and a one ton truck, regardless of what was added to beef things up, isn't the max payload of both trucks 7,500 pounds? Isn't the tire ratings usually the weak link in max weight capability in heavy duty trucks?