One slight correction: The Roman Catholics are NOT the only Church to have Apostolic Sucession.....so does the Holy Orthodox Church.
That's right. The only legitimate apostolic churches are the Catholic Church(es) and most of the Orthodox Churches.
Episcopalians claim Apostolic Succession too, which they have in a physical sense. Which leads to something that's bugged me a little. The only reason the Anglicans do NOT have Apostolic Succession is because a Pope, long after the death of Henry VIII, SAID they didn't have it. But how can anyone, even a Pope do that? They can't take away orders anymore than they can allow divorce. The Ordination is a Sacrament just as Marriage is a Sacrament, and what God has joined (ordained) let no man put asunder.