Islam isn't a system of laws. Sharia is not Islam. I'm pretty amazed that I've just read this thread, to be honest.

Sharia is the laws OF Islam. Sharia is not equal to Islam. Set A contains set B. Set A is not equal to set B. You might as well say that Christianity is the ten commandments, Judaism is the halakhah and Atheism is the American Atheists’ conference code of conduct.