Interesting point. You don't see people jumping onto threads about Jewish interest to tell them that Judaism is wrong ... or even (usually) into threads on Orthodox Christian points, although the Orthodox have all the Sacraments, the Apostolic Succession, and revere the Mother of God. (In foreign languages, too!)
I guess Catholics are it, for better or worse!
As do the Eastern Catholic Churches like mine, the Maronite Catholic Church :-) (Consecration in Aramaic using the words and language or our Lord at the Last Supper). You get any closer than that!