It really depends on the amount of snow and type of snow. Where I live in Canada, we get enough snow that AWD > snow tires. Given enough snow, or conditions, even snow tires will get stuck. Having power on all 4 wheels really does give superior traction in those situations.
Definitely a good point. For reference, I should have mentioned that I'm in the middle of Wisconsin. We actually had very little snow over the past two years, and I'm hoping for more this winter.
