Just traded my 13 ecoboost. All comments above are dead on. I actually really liked the Ford, prior was an 11 Tundra. The missing link here is resale value. Sticker on my 13 was 51k, add in x plan and rebates and I was out around 43k iirc. Went to trade after 2 years and 44k miles and the dealers all offered 24-25k. So 20k loss in 2 years. Never again.
Bought a 2012 f250 with the 6.7, and yes the mileage is significantly better with the 8200 lb hauler and rig., but the f150 was more than adequate towing the same trailer.