If you go to the Ford site and Price & Build your F-250 you can see on the right hand side of the screen as you add or delete options it shows you the towing capability and payload just to the right of the price. A F-250 Lariat, 4 X 2, Crew Cab with Gas engine & short bed has a payload of 3630 lbs (as shown on the right hand side of the screen) (small letters & numbers), substitute the diesel for the gas engine and payload drops to 2980 lbs. Substitute 4 X 4 for the 4 X 2 and payload drops to 2620 lbs. Try it. It surprised me.
Let me know if you agree