Islam is a distorted mirror image of Judaism and Christianity. So, institutions and behavior valued in the Judeo-Christian tradition appear in Islam as a distorted mirror image. Marital fidelity (one-man, one-women becoming one) is valued in in the Judeo-Christian tradition. In Islam, it's distorted to four wives, with no sex outside of marriage, except as allowed in Islam. Sort of a Kerry-esk "yes, BUT", mirror image of Christianity.
I'll bet you still don't understand what I've said.