Here is a rather indepth (8 pages) of all three brands, gas, diesel, SRW, DRW. Auto, Manual, Unloaded, Loaded with 12000 lb tow, etc.
After defining the trucks and the tests, the data starts on page 5.
http://special-reports.pickuptrucks.com/2010/08/2010-hd-truck-specs-and-testing-approach.html