Hah, I have nothing to take away from the 2017+ "Super Duty" Ford trucks. They're fine. I'm also into trucks, maybe more so than cars, and can agree with a certain aspect and that is: if you're after a monster truck build. The IFS is much better than the straight axle setup for ride/travel, at least from what I have experienced. The Square wheel wells are limiting but tons of people run 22x14s and the like on Chevy/GMC HDs. I guess if you're looking for a big freakin' truck and you want 14 wides or 16 wides (O_O) then yeah, a Ford SD is probably up your alley. But I definitely don't think that Chevy/GMC's with 12 or 14 wides on a nice 4-8" lift look "goofy".
Some other high points for GM trucks:
Engines that have power in the half ton series (No ecoBoost BS)
Transmissions that are glass smooth and extremely well built (In half and HDs) (Ford to this day has a hard time building a good transmission, look at the Focus and even their HDs which pale compared to an Allison).
Interiors that are nice looking, as well as being well built-enough. Lots of people are saying the new Ford Platinum interiors on the SD is better than High Country/Denali counterparts but after being in both, I definitely disagree. I find the Denali/High Country much nicer to look at, while the Ford looks bulbous, square and awkward (Just like they ALWAYS have). I haven't handled the Ford's switches and buttons so I can't speak to quality of the stuff...
Edit: I could definitely add ride quality (Especially with the top level Denali which gets Magnetic Ride!). General road noise. Steering...I mean what else? I have always said, Ford started building truck amenities before they figured out how to actually build a truck...Meaning they start making things like "Auto park" "Auto trailer backup" "Steps on the tail gate with a railing" "Massaging seats" before they've figured out how to build an Engine, Transmission, Suspension System, Brakes, and Frame. GM has always won those sections regularly, though not always of course.
Anyways, you should try a Duramax sometime. And in the meantime, go look at the countless HDs with 14 wides

. (But btw, a 14 or even a 12 wide isn't needed for stability at any point lol it's just for looks and bragging rights while doing excessive damage to your paint, bearings, etc.)