I think its important to clarify what's the defining distinction of sexual sin.
The churches in the past have assumed or taken child sexual abuse as a sin such as fornication and adultery and pretty much handled these situations in similar fashion.
Catholic priests asked for repentance, they were then absolved from their sin and many times returned to their parish or placed at another parish somewhere else.
It was all handled internally until recent times when this information was brought forward to the general public's awareness.
Likewise the WTS. handled these situations on its own influencing its members to not bring these matters to local law authorities, in spite of knowing that this kind of social behavior was a felonious crimes in most countries .
So why is sexual abuse of children not the same as other so called sexual sins ?
The WTS treated it as the same, in most cases asking for admission to the behavior, when there was none the matter was just left in Jehovah's hands.
It appears that sexual predators have exploited the pretentious virtue of participants within churches to prop up an image toward themselves and this further adds to the over all problem.
In my opinion there should by laws made for social environments where there are children involved, that any situation of possible sexual abuse arises, that these situations should be reported to the local law authorities. This would include religions, community social clubs, educational institutions, sport clubs etc.