you better look at the pictures of his truck and choose the right options before you judge
a 2012 dodge ram 1500 with crew cab with v8 and 4x4 and 3.92 gears is listed at 10,050 LBS by your chart
I'm not saying hes not overloading the duty's and capibilty of the truck if he happens to tow the ford dually but thats his problem I guess