I dont believe that is true. Saix was given some aspect of hiearchy among the rest of the Org. He was givin some very critical and important orders, and was visibly nearer to X then any of the other members. it was clear that X "saw" more to him then he did the other members. Whether it was his dedication (which i believe to be true) or the fact that he could be considered an established threat, he still had something none of the other members came close to having (not even Marluxia as Lord of castle Oblivion, which was just a farce).
What do you mean, X? Like unkown, as used in math?