You assume in the first scenario that B is worse off than A. Simply being a member of a group does not guarantee its benefits. There are very well to do B's, an

You assume in the first scenario that B is worse off than A. Simply being a member of a group does not guarantee its benefits. There are very well to do B's, and A's who has their own unique disadvantages. At a more abstract level, it is dehumanizing, by way of eliminating individual characteristics and treating all people of a group by some imaginary group identity.