It does not state that God wrote it it means that God dictated it to Muhammad and he wrote it. The bible claims to be inspired by God in a similar manner but just to more than one man. Prove that god isn't man made then and I will gladly change my tune. You call my statements crazy but you are the one who still believes in fairy tales and an imaginary guy in the sky.
There is nothing people will not maintain when they are slaves to superstition
http://chatpilot-godisamyth.blogspot.com/
http://chatpilot-godisamyth.blogspot.com/