Nothing.
What's better for shaving: a DE or a straight razor?
What's better for driving: automatic gear or hand gear?
Do you peal an onion with a paring knife or a peeling knife?
Stainless or Carbon?
A natural linen or a nylon strop?
By the way, in my opinion natural stones should not be given a grit rating. That's something for synthetic hones, that use uniform and measured abrasive particles.
The answer to all questions is: "romantics":hmmm:.
Bart.