You occasionally see plowing disparities almost that stark in Minnesota if you go to the border of either Minneapolis or St. Paul, and one of their adjacent suburbs. The main cities won't declare a snow emergency for less than three inches, and even when they do plow it takes forever because people don't get around to moving cars off the roads in time (to be fair the snow emergency parking rules are arcane and confusing and often it's hard to find somewhere else to park).