Let's cut right to the chase:
The purpose of Islamic Jihad was (and still is) to enslave people, the purpose of the Crusades was to free Christians from enslavement by Muslims. There is NO MORAL COMPARISON between the two.
You want history? I'll give you history.
Here is the history of the last 1,400 years illustrated on a dynamic battle map of both the imposition of Islamic Jihad during that period and the imposition of the Christian Crusades.
Keep in mind that Muslims had been brutally attacking Europe for 450 to 500 years before the Crusades even took place.
If you can see this history and still believe there is some kind of equivalence between these two movements, you are irredeemably brainwashed.
There is no moral equivalence. Islamic barbarianism stands alone as the most evil force known to mankind in the last 1,400 years at least and still is to this day. There is no religion more intolerant, more violent, more militaristic, more tyrannical, more evil or more dangerous on earth.
Watch and learn the truth.