I don't hang out on the truck site but I do not hear many people talking about them. The hype on them seems to be too much for any gm to hold water. Gov't motors will never be the same.
Not sure what data you were looking at but I'm comparing the 3/4 ton diesels as that's probably what most people are buying (and the subject of this thread).This are cool to see Aaron. Funny to see GM & Dodge do well unloaded in fuel mileage but get spanked over and over towing by Ford.