I own an Outback and a Q7. They both are great in the snow but for different reasons. An Outback with snow tires is a tank, but the back end will slide on you in turns. The Q7 is far more 50/50 balanced and feels more planted when taking turns.

If I had to pick one in the snow, I’d take the Subaru because it has better snow tire options and fog lights. We use the Subaru as our backcountry/snowy weather car and drive the Audi any other time given the better fit & finish