Normal? Yes.
Your friend has ML with LSD rear while you have open rear diff, with stability and traction control, a system introduced early in the MN life after the Victorian government introduced legislation requiring ASC on new vehicles.
The two systems perform a similar function on road, in terms of transfer of some drive to the wheel with traction i.e. not spinning, but appear different in a no load situation such as you've created by jacking up the rear end.
More information
here and
here.
Please continue discussion in an appropriate thread.