I wonder if this is like the C&D article about the one tons where Chevy dominated. Test was conducted on the Chevy test track, with all vehicle being provided by chevy, all trailers provided by chevy. The Silverado 3500 was decked out with low gears, aftermarket tires, fully optioned. The Ford and Ram were bottom of the barrel 1 tons with much higher gears and no options.
Just Got it, Give me time!