OK, link to diesel not in original post. Still, here is Car & Drivers take on that:
There's no denying that the 3.0-liter Power Stroke is a polished performer. The rub comes when you start to delve into the numbers in earnest. In addition to adjusting your fuel-economy expectations for cab and driveline variations as previously detailed, there's the small matter that the diesel's 11,400-pound max tow rating and 2020-pound payload rating aren't even enough to make it the most capable workhorse in the F-150 lineup. That honor falls to a properly equipped F-150 with the 3.5-liter EcoBoost V-6 that is rated to tow 13,200 pounds and haul a 3270-pound payload....Considering the initial upcharge for the diesel engine, it's a numbers game best left to be played by shoppers with sharp pencils and solid usage data.