You live in a drean world if you think that Protestantism is united in anything. The millions of sects is manifest. and morphing doctrines are manifest, while Catholicism has lasted from Christ's time till today, unchanged by the thousands of heresies that tried to shake it apart. It's all there for anyone to see, in space (Japan, Paris, or Montana), in time (in 325 A.D. or 2010), same religion, Catholic, universal.
You are still resorting to broad brushing Prots as including all who are not part of Rome, which is neither accurate or proper to my replies.
As for Catholicism being unchanged, and the same in 325 A.D. as 2010, that is what is a dream world. Many key doctrines did not even promulgated till much later, nor was the “unanimous consent of the father” which Trent misleading used, often even close to being unanimous. You did not even have such as concerned the canon, or a infallibly defined one until after the Reformation. As for recent history, i respect the sedevacantists here: http://www.catholictreasures.com/articles/25errors.html