Sleepy, in situations like this you must remember the old adage which is timeless:
Never argue with an idiot - he will drag you down to his level and beat you with experience.
The Ecoboost 3.5 was not designed to BEAT the Chevy 6.2 or any other engine purely on HP AND be expected to deliver better mileage in all situations. Nope. The goals were more modest. What Ford accomplished was to develop a compact and lightweight engine that produced great Torque (you know...the force the actually moves an object) from a very low RPM and maintain it across a wide RPM band. As a by product of the engine size, when not being called upon to tow heavy loads (twice the payload and towing of the Chevy hybrid 6.0), it would deliver great mileage. In addition, the smaller package and lighter weight would provide better weight distribution, better suspension tuning, better turning, better braking all without having to upgrade these ancillary systems (cost).
Ecoboost provides the equivalent (better) torque, sooner in the RPM range AND across a wider RPM range, from a smaller package all the while delivering equivalent or better fuel consumption figures. The engine was tested, on camera, through more severe duty cycles than most engines can imagine seeing in two lifetimes and it still maintained factory specs upon tear down.
Ford did a great job with their Ecoboost engine line. Perhaps not all will like the styling or brand or colors Ford offers. So be it. GM and Chrysler also make good trucks. The issue here is that Ford has effectively shifted the paradigm and some can't come to terms with it. Just like computer controls would spell the death knell to performance cars...er...oops - that did not happen, people can't grasp smaller, boosted engines replacing cubic inches...
The facts tell the true story. The Ford 3.5 Ecoboost delivers equal or better performance than the 6.2 Chevy or the 6.0 Hybrid without sacrificing it's work credentials (towing/payload).
There is another old adage to follow - don't spit into the wind.
With twin turbos, Ecoboost is blowing hard in Chevy's direction...