I have a 2014 Tundra and a 2015 F-250.
I prefer the F-250 diesel over the Tundra gas.
F-250 : prefer diesel engine, short bed is 6 foot for tax write-off.
Tundra: better built, better looking, gas mileage sucks, towing sucks, long bed(over 6 foot) looks awful.
If Tundra would make a diesel with a 6 foot bed, I would be at the dealership.