What I want to know is of those surveyed how many were running stock tires and suspension cuz in my experience lifts and 33s, 35s, 37s are the worst things you can do to range, fuel economy. STOCK most 4x4s are pretty reasonable today.
On the f250 I did the carli leveling suspension system and put on 35's. i lost about 1mpg on the highway and about 2mpg in town (due to rotational mass... and the fact I tuned the truck and the launch was fun)... I wouldn't take a stock f250 any place I took mine after the carli system and tires.