The coach has a gross weight rating, my BH is 16,000. I know you do not want to exceed that as well you do not want to exceed the 14,000. But never gave the pin rating much thought, that is a very good question. You would think it would have to be 16000 lbs, my hitch in tv is rated for 16000lbs.
It does not hold the gvw put it has to pull it. Would be interested to see what Lippert has to say.