You certainly come across as an apologist for Islam - always minimizing anything that does not shine a favorable light on it.
Now as to your Christian deliberate murder theory - prove it.
I understand the point that
@Luis Gonzalez is making here. His isn't a Christian v. islam argument. He is simply discounting whether these deaths can be placed at the feet of the religions per se.
Let's take Christianity. The Christianity of the Second, Third, and Fourth centuries cannot be compared to the Christianity of the Crusades. The early church had access to the manuscripts upon which the New Testament was based. Not so for the later Church. Catholicism coming out of the Dark Ages did not at all resemble the Christianity of the early church. So can the political behaviors they espoused be placed at the foot of Christ's church? Certainly not.
The same case can be made of islam. While I admit that I have a very strong bias against it, the historical record shows that a lot of great advances were born out of the islamic empire. It was not always the case that infidels were persecuted and slaughtered. I am reminded that Saladin spared all the Christian inhabitants of Jerusalem when he reconquered it near the close of the 12th century.
Consider also that the vast majority of deaths caused by these muslim armies fighting at the behest of allah were other muslims. They have spent more time fighting each other than any other religious group.
The bottom line here is that the worst of humanity is to blame for wars, persecutions, and killings - not religion. When man does what is right in his own heart, people perish.