Calfskin vs cowhide durability

[Mike83]

Having some trouble picking leathers for durability.

Obviously a thick cowhide leather is going to be stronger than a thin calfskin, but, unless you're dealing with a thickness that isn't available in calfskin, that doesn't really come into it. For leather clothing, shoes, most bags, etc., the thickness required is available in both calf and cow.

Like-for-like (similar thickness and similar tannage), which one is going to be more durable - calfskin, or mature cowhide. For scuffing/abrasion? Splitting? Stretching? Cracking?

Thanks

[Mike83]

Thanks.

What about bison? Is that materially stronger than calf in the same weight and tannage, or is that just hype on the part of the bison farmers/tanners?