Muslims kill child rapists? Where have you been? Under a rock. Having sex with children is okay in many Muslim countries. Even marrying child brides just as it's taught in the Koran.
You are right about all of that. The religion is abhorrent and they will rape and pillage all non-muslims to their hearts content. But its obvious you don't know what you're talking about outside of what you have read. I am talking about saudi arabia and the UAE in particular not some war-torn failed state where anything goes.
If you get convicted of rape, you get beheaded. You are quite ignorant because you haven't spent anytime in any of these countries but I am sure you can use google. If a woman has sex with a male she isn't married to, her own family is honor bound to kill her and if you rape a muslim woman, you're dead. This is common knowledge so come out from that rock you have been living under.