This gives me reason to re-evaluate the necessity of a Pope to keep everyone on the same page.
Roman Catholics are all on the same page because of the Pope?!? I spend a lot of time at 3 different Catholic institutions of higher learning in Boston. Haven't met a single person who agrees with everyone else (the theologically-based infighting, factions and cliques are astounding!) -- and only one person who actually admires the Pope (especially the current one), and this professor isn't even Catholic (she's Lutheran!).
Of course, it may be my personal experience, but based on my interactions and readings, I would venture to say that there is probably no more diverse Christian Church than the Roman Catholic Church, wherein diversity extends to many doctrinal and liturgical matters of the utmost significance: liberation theology, Kungian theologians (of which there are many), "New Age" Catholics, Charismatic Catholics, advocates for female ordination, liturgical dancers, followers of Mother Angelica, "liberals," Karl Rahner types, those who agitate against Vatican II, traditionalists, folk Catholics (who mix tribal customs and beliefs with Catholicism), etc., etc. (Even in churches like the Unitarian Universalist, one wouldn't find a "traditionalist," sitting next to an animist, sitting next to someone who likes to worship in tongues).
And in addition to this diversity, there's a fairly wide-spread disregard for basic Catholic teaching. The Magesterium may claim to speak authoritatively on many matters, but polls show that most Catholics, especially in Western countries, are rarely listening to even the most clear-cut statements of "official" Catholic theology (e.g. birth control). And that includes plenty of people in positions of leadership. Just have a chat with your run-of-the-mill Jesuit or German Catholic.
Diversity of opinion and practice is par for the course in any organization with more than 3 people.