if a King set up a dukedom, lets say Duke of Ohio, all of the dukes children would be royalty but only one would assume the office of Duke of Ohio
so while there are many Sees that St.Peter founded, only one did this special role of "first among equals" pass too
oh yes, I have no problem calling the Eastern Orthodox Church the Eastern Orthodox Church even though i believe the EOs teaching on the Pope and Purgatory are very unorthodox, you guys are the Orthodox Church and we should be polite, now sometimes i use "Eastern Orthodox" rather then just Orthodox because there are also Oriental Orthodox so I like to show that there is a differance
also, I have no problem with the name "Roman Catholic" that is a common name for my Church, I call it simply the Catholic Church, but if others want to call us Roman Catholic I have no right to be offended because greater Catholics then I have called it "Roman Catholic"
now I do get offended when we are called "Romans" or "the Roman Church" i mean a little respect is nice, so many people (not you) are very disrespectful, I mean, if you can not call us Catholics, or atleast Roman Catholics, then really, why bother even talking to us?