What we are talking about first and foremost when we discern the merits of Islam or Catholicism are the merits of their teaching. The teachings are central. Obedience to the teachings that one purportedly believes in speaks to the character of the individual. The character of the religion however is defined by what is written.
Terrorism can be honestly be argued to be a tenet of the Islamic faith. It is a religion of jihad, and jihad in its original and most fundamental form is violent, holy war. The fact that the highest percentage of Muslims reject that makes them good people, from our pluralistic point of view, but does not necessarily male them good Muslims when it comes to loyalty to a faith that often ought not merit loyalty for some of its tenets.
Catholic priests who abuse are never even close to acting within the faith as taught. Sexual abuse of children is a complete rejection of anything that Catholicism has ever taught. This is not even arguable. Any criticism of Catholic sexual ethics is always, always, always that the teaching is too moralistic and not libertine enough.
There is more to a faith than the teaching however. There is also the institutional church and the administration. For Islam, this would necessitate an understanding of the role of Saudi oil money and the radicalization of the message in mosques globally.
And in Catholicism it would necessitate understanding the global cover up of heinous abuse by the top echelons of the church.
To conclude, the premise of the argument is wrong. Only political correctness is what precludes forces in the West from seeing the evil that is in Islam. Even if this political correctness does not extend to Catholicism or Christians in general, the evil would be to turn away our gaze from the abuse that has, and is taking place. Just because politically correct people are involved in the cover-up of the glaring problems of Islam, that does not make the same kind of cover-up and excuses for heinous sex crimes in the Catholic Church any less evil.
We need to do better than Rotherham. As Jesus might say, would be better to be thrown into the sea with a millstone around your neck that to dismiss what is happening to these children as if there are more worthy goals.