i think alot of you are slightly confused as to just how the VDC system works on our cars...
when VDC is OFF, if you are in snow, or have severe wheel spin in a corner , and only 2 wheels are spinning(inside wheels) the VDC system brakes those wheels and transfers power. on pavement its ehh, but if pushed hard the cars tail end come out similar to a LSD.
in snow it feels like full LSD differentials front and rear because its easy for the VDC system to transfer power side to side as your on a slippery surface.
so if you think your 08+ subi is only 2wd because of open diffs, its not the case dont worry !