Typically engine over drive axle results in maximum traction and better "go" in the snow. However not necessarily better handling. Like many have said, RWD can be managed in snow if learned. Especially if one has a manual transmissin, which allows one to start in a higher gear and thus reduce wheel spin. Some auto transmission vehicles allow a position to be selected that will start the transmission in a higher gear. I think it was my GMC Sonoma had that function. Limited slip rear differential helps also. Current day traction control on RWD vehicles negate much of the problem of lack of weight over the rear wheels.
All in all I have had several FWD vehicles over the past 30 years, including a 2006 Equinox and now the 2011 Terrain. Living in central Michigan and in a rather urban area, I have only got stuck once and that was when my driveway was drifted about 3 feet deep. Even then, I only had to back out and blow the snow out of my driveway to get to the garage.
Having learned to drive on a Model A non-syncro transmissin, rear drive dump truck when I was about 12 years old in 1952, I likewise prefer a RWD for handling and as one mentioned the ability to oversteer them on slippery conditions.
Solution, drive your FWD in the winter and your Vette in the summer
