I addressed what I think are the reasons for the Catholic Church to have a higher incidence of individuals with pedophile tendencies to be attracted into the clergy than some other denominations.
But make no mistake about this: the Roman Catholic Church was far from the only church to sweep this stuff under the carpet. The several dozen cases with which I have personal familiarity occurred in one Protestant denomination, and I know all of the denominations had similar problems. When clergy sex abuse issues started becoming public, almost all denominations in the U.S. started taking quick and decisive action to take care of the problem, based on strong advice from legal counsel.
What you need to realize is that in most Christian denominations, power flows from the bottom up, with congregations electing regional leaders, and those regional leaders electing central church authority figures. Entities that are structured like that tend to be more responsive to public perception. They know the cost of not being responsive - entire congregations and groups of congregations splinter off. There is a reason that there are half a dozen Lutheran denominations in the U.S. alone.
A hierarchal church (in which power trickles down from the top), like the Roman Catholic one, and especially one in which all authority descends from one individual who is deemed to be infallible, is not going to be responsive to the concerns of the people at the bottom the way a nonhierarchal church is.