Well, duh. The Western Crusaders of 1205 were indeed as bloodthirsty and rapacious as the Wahabists of 2005. The difference is, obviously, that Western Civilization (mostly) got over it.
I am a knight under oath of the order of Westminster. There are still knights in the world today and always have been. And you are correct that the difference between Christian knights today and Muslim holy warriors is that we do not believe as did the knights of the Middle Ages, that you gain heaven by killing God's enemies. This was not Sciptural teaching back then and it is not Scriptural today. We of the order of Westminster believe God will take care of His enemies, we are to love them until He does. This does not mean we Christian knights believe in non-violence.