Don’t know first hand but found this on the web.
“The fibers in the horse's rear are more compressed than in steer hide, which is one reason Shell Cordovan doesn't crack or crease. More fibers mean more durability, strength, and flexibility. The grain structure also means that horsehide tends to be more abrasion resistant than cowhide.”
Don’t know what weight it come in, that could be a factor too, maybe.
Never seen it myself, but that doesn’t mean much.
Dave?!