I have actually done just this about a week and a half ago. I stayed in the truck as they loaded the exact same amount of the exact same dirt. Truck was absolutely perfect getting it all back home (about 6 miles or so). Then I went back this past Tuesday and got another load with my beater truck (1996 Mazda B2300 with about 210,000) miles on it) and the difference was quite apparent. Obviously they are different sized trucks. But the Beater dropped down quite a bit and drove horribly. All in all, I would say that the Rebel's dirt hauling game is pretty good.
And billythekid, this is why no one likes you. Pointless posts for absolutely no reason.