When a Christian kills, he is a lone wolf. When a Muslim kills, Islam is to blame.
I assume your criticizing what you see as a double standard. But if so, I think you're mistaken.
There's almost no way you can read the Bible and come away thinking that God wants people to shoot up an abortion clinic.
From my non-expert reading of the Koran, it's pretty easy to come away with the understanding that God is okay with Muslims killing non-Muslims.
Please let me know if I'm misinformed.