Entertaining "test" err....Subaru marketing ploy!
Most all of your AWD, 4x4, etc's will just sit there and hopelessly spin one front and one rear given those exact conditions.
With some allowable front/rear or side/side movement you'd get all of them to pass the roller test.
I know my in-laws love their Rogue in the winter. They live way back off the road, basically at the top of a mountain. For decades they suffered with FWD or RWD only, with snow tires.