[Modernman]

On Faith and Morals he's speaking with the guidance of the Holy Ghost. And it's infallible.

Well, isn't that the whole debate? As a Catholic, that is your position. However, no other religion accepts that claim (AFAIK).

The Catholic claim that the Pope speaks with the guidance of the Holy Ghost is only persuasive to Catholics.

When the Pope speaks excathedra on these issues it's no longer an opinion. It's truth.

For Catholics, sure.

[Donald Rumsfeld Fan]

As a Catholic, that is your position. However, no other religion accepts that claim (AFAIK).

Yes, that is true. The the Roman Catholic Church alone claims this doctrine.