RWD these days is a lot better than RWD of years past. i drove an 86 Monte Carlo in college in NH and i almost died several times in that car with just rain! it was horrible on all roads.
the long and short of it is...for the average and below average drivers (ie. 90% of the population), FWD is safer because it is easier to control and correct understeer than oversteer. oversteer scares people into thinking they are going into a spin, so they panic and slam on the brakes, gas, radio, or whatever else they can get their hands and feet on. then, of course, theygo into a spin, panic more, and curse RWD forever. THAT is what makes RWD dangerous in the snow.
if you are an above average driver, have a set of FOUR good snow tires, and any semblance of traction control, you'll be fine.
