@itguy08
By reading your blogs, I'm thinking you are part of some organisation delivering misinformation. It isn't Ford/GM/Chrysler, it has something to do with the guys who build them vehicles.
I own a 3.2 Mazda BT50 (essentially a global Ranger). It's a diesel with 200hp and 350ftlb of torque. I live near Darwin. I do know my vehicle weighs 4 600lbs and is a 4x4 with a bullbar/driving lights/heavy tow package. These accessories will reduce mpgs by a mile or two.
Our speed limit up here is 85mph at that speed I'm getting 23mpg. At 65mph I'm getting about 32mpg.
I have only towed a trailer from Melbourne to Darwin. the trailer had a pantech on the back and was about 6' high from the bed and 6' wide. This offered some wind resistance. Towing the trailer between a steady 70-75mph I was getting 26mpg.
Up here we have what are called roadtrains that sit on 60mph, overtaking is a breeze in the diesel. It appears as speed rises the vehicle's performance improves markedly. By the time I pull in to my lane after overtaking the roadtrain I will be reaching 85-95mph.
Also, diesel will accelerate up hills were a gas won't. Gas engines have to be revved quite hard (lower gear) to achieve the same torque through the rear wheels. This is where the diesel gains most of its fuel economy over a gas engine towing.
Eco Boost are designed to meet CAFE targets under CAFE conditions first and foremost. They are primarily designed to run empty. Load the Eco Boost engine and it will suck fuel like any other gasoline turbo engine.