notice it says nothing about fuel performance vs the others V8's
See theres this thing about "power" (you know work/time) were you just cant "invent" power out of thin air... it has to come from something... so if you want a certain amount of power... you have to burn a certain amount of fuel.
so if you want to do the same amount of work (pull the same trailer up the same hill) and you want to do it in less time, then you have to have more power and the only place that comes from is from burning more fuel.
now yes there is efficiency, how effectively are you burning your fuel ect...perhaps the direct injection gives you a slight advantage. but how much? (show us some MPG numbers)
in addition what are the displacement numbers. you remember the old saying, no replacement for displacement? so are you stacking a 4.0 L V6 up against a 4.2 L V8?....if so that V8 doesnt have much advantage in L. and the fact that your V6 is running twin turbos is HUGE. Not in that you wind up with better efficiency numbers but that cramming more air into the cylinder allows you to push more fuel in (again back to that power thing)
SO next time you want me to be impressed with your spankin new unproven engine, slap a displacement number on it, and if your going to plaster "ECOBOOST" all over your advertisement you better d@mn have some solid MPG numbers to back it up! (opps you must have forgot those)
In short im unimpressed.