The answer to why a Wrangler is so good in the snow is easy. Get your title. Look at it closely. There are 4 letters that are of importance to this question. They are the letters J, E, and P. E is used twice. Put them together in the correct order, and they spell JEEP!!!
It may have something to do with wheelbase, I don't know. Whatever it is, it works. I pulled almost a dozen stuck vehicles out of being stuck last winter alone. Hopefully I'll do it again this year.