The truck vid is awesome.
Of course, I'm a dork, but if the sled was relatively smooth, and the FieldTurf is slick, his job is easier -- there's an initial friction at rest that has to be overcome. Concrete on asphalt is very choppy and would tend to rest. Rubber on asphalt is smoother, hence the peel out with the truck. I'm sure a serious attempt could be made to make them both more even -- Lynch and the truck -- and I bet the truck would do better, but it doesn't surprise me all that much that on a pound for pound basis, Lynch is stronger, I just doubt he's 17x stronger...