Well the video does show two competitors not even coming close to rolling.
Chrysler fired back at this test saying the car was improperly loaded (100lb over maximum allowable) but the magazine retorted with this:
Due to a complete incorrect statement by Chrysler, many people believe that we performed the first moose test with 50 kilos (110 lbs) overload in the Jeep Grand Cherokee. This is not the least bit true. We performed the first moose test with 100 kilos (220 lbs) less than the maximum payload (602 kilos/1 327 lbs) that is registered for the car, a figure which officially comes from Jeep/Chrysler.