Well as far as I know Ford didn't build the 7.3 non turbo. Navistar\ International built that. The one that replaced it which I think was the 6.9 was also a Navistar engine.Ford diesels are the biggest joke on the road. Total junk.
Chevy\ GM got the Duramax engine from Isuzu. And I'm not complaining here. At least Isuzu can do one thing good. I've known one guy with a low mile Duramax that needed a transmission and another one that needed a very expensive rear end. At the same time the Super Duty trucks did have their share of recalls. It's apples and oranges. All the seriious diesel and towing guys I know like the Dodge Cummins trucks. But I've looked up more than one transmission on those trucks when I worked at an auto salvage. And I'm talking about trucks from 08 to 10.
So... basically until Toyota gets into one ton diesel dually fleet trucks it looks like you will have to pick your favorite American brand and decide which shortcoming you can deal with best.
And by the way the F series is still the number one selling truck of all time AND... It's the vehicle more millionaires drive than any other. So that tells you that the rich smart guys know what really works.