Catholicism has been saying this for 1500 years...it's nothing new. However, I'd have even less respect for that church than I already do if they DIDN'T hold themselves to be right at the expense of others. Otherwise, why bother having a church at all if everything else is just as good? It's impossible for everyone to be right.
BTW, John Paul believed and proclaimed the same bull Benedict now does. He's no different than any other pope, although to his credit he did actually fight against the Nazis instead of rolling over for Hitler like Pius XII did.