Indeed the distinct difference is asymmetrical warfare. The only reason they do not match the West's military power and might is because it isn't available to them. Well defined enemies ain't what they used to be. In most cases when fighting a much superior force, being a well defined enemy is courting swift defeat. Instead, you use what you have available, often the easily manipulated public masses. Constant social unrest is an advantage to the weaker opponent in asymmetric warfare.There is a distinct difference between a crazed mob targeting any people of a different religion and fighting a well defined enemy in a war.
What I am not doing is looking at it linearly.If you fail to see that difference then any further argument with you is obviously not worthwhile. Using your "logic" then most US crime is also "religious" violence, perpetrated mostly by Christians (and mainly upon Christians).
"When Faith preaches Hate, Blessed are the Doubters." - Amin Maalouf
"If I take death into my life, acknowledge it, and face it squarely, I will free myself from the anxiety of death and the pettiness of life - and only then will I be free to become myself." ~ Martin Heidegger