Of what qualities? I'm puzzled that it's not obvious. Of the qualities that distinguish sought-after shoes from mediocre ones: Durability of the soles, fineness of the uppers, neatness of the stitching, appeal of the antiquing, and so on.
It's not just a question of models. It's also a question of quality and value. For example, AS Exclusive and C&J Handgrade both have channeled soles, but the former is $100 cheaper. Where do they make up the cost?