And well we are on the subject of snow and tires........
Snow is a beast with many faces, and to find a particular aspect of tire that works in it is really dependent upon the snow you are talking about. Wet slushy coastal snow, pizza cutters are often ones to choose as they can cut though the snow down to some surface below. Additionally, highway slush, similar desires and effects, with the smaller footprint sinking through the slop, avoiding a slushy hydroplaning situation.
Now as you head to higher elevations, or dryer climate, the snow changes dramatically. Dry and deep is no place for the pizza wheels, as they can't find bottom, or they just heat up the snow creating ice holes for your tires. Wider is better here, with floatation being your friend.
Now, realistically, when it comes to wet and icy, tread design becomes far more important than aspect.
Sorry to drag things off topic.......