What I found odd about Islam was that although the Koran is the first, was dictated straight from God, the later pronouncements take precident - and are as a rule far more vitriolic.

If you want to bash Christianity (and I think that doing that is in many ways far easier) feel free to start another thread. Bult to speak in relatavism on which religion slaughtered the most people isn't that helpful; I would also add that most religious texts let you choose a verse to suit almost any decision.

Islam in the early years was a militaristic religion that swept over large parts of the world, and so did not need much in the way of compromise with the locals as theirs was the dominant religion.