[Batman]

Def the skinnier tires, like stated above you are going to get more weight on a smaller area which will let you cut deeper into the snow. While snow to snow contact is what you are looking for you don't want to be on top of the snow, think hydroplaning in a deep puddle. same basic principle. Wider the contact patch the lower the psi and the more likely you are to slide. Most summer/all season tires will not pick up snow properly as compared to snow tires, it tends to cake on unevenly. Pound for pound you can't beat dedicated snow tires. With proper snows you really cut down on the difference for the sizes as the tires do all the work.