I suppose if someone would be able to find the number of abuses committed by imams, it might equal those by priests. Or even exceed them.
The crimes committed by the Muslim clerics are seldom reported, because of their powerful position in the society. A few years back, there was an incident in my hometown, when a madrassa (Muslim religious school) teacher sexually abused 40 or 50 of his students (both male and female, most of them below 10 years of age). The incident was quickly hushed up, and the teacher was transferred to another madrassa.
Sigh. This is why we really need massive secularization of the state. If the religious elite can still keep on abusing their power in secular countries, just imagine if the religious establishment actually have a larger control the government, like how things have been in the past.
That madrassa incident reminds me of erring parish priests. How where they able to completely hush it? Did they manage to bribe media as well? I just hope enough people managed to hear of it through social media, at least they'd be able to protect their kids by moving them to a different madrassa or cautioning them of possible abuses.