I used to drive a Civic hatchback that was dropped 2.5". That thing made it through everything except about 15" of snow where I had gotten it stuck a block from my brothers house. That was the only time I'd wish I had an extra 3" of ground clearance. So yes I agree that light cars do real well in the snow. I also agree that tires are also the best thing you can get for snow. It's also a good idea to get the skinniest tires you can so more of the weight is concentrated on the contact patch.
I have a Subaru Forester now and sometimes it's shocking how it just loves bad weather. Too bad it acts like a bigger SUV in maintenance and gas prices though.

