If you wouldn't mind reviewing https://news.ycombinator.com/newsguidelines.html and taking the intended spirit of the site more to heart, we'd be grateful.
I am not convinced the religious reason you propose is the actual differentiator but if you're an expert on the role of islam in armed conflict I am listening. Otherwise we've seen insurgencies effectively resist much stronger forces in vietnam, ukraine, and at one point the united states itself, without any particular unifying theology that I'm aware of.
https://archive.org/details/victoryinvietnam0000unse_u7j3 Victory in Vietnam : the official history of the people's army of Vietnam
Opened Soviet archives after the fall of the SU said the same.
The US basically always said that.
Aside from that the "they're happy to die because their religion says they get virgins" is something I remember my second most racist uncle saying after sept 11. It's not even really true? It's a very narrow reading of a particular passage, that, yes, extremists have gotten a lot of mileage out of. But from my lay understanding of islam does not feature heavily in the personal religious experience of most muslims.
Again unless you have some particularly insight or expertise about the role of islam in motivating individuals in conflict I think you should reflect on where you got this idea and what you were trying to communicate by using it here.
"Those who leave their homes in the cause of Allah, and are then slain or die,- On them will Allah bestow verily a goodly Provision: Truly Allah is He Who bestows the best provision. Verily He will admit them to a place with which they shall be well pleased: for Allah is All-Knowing, Most Forbearing."
- Quran 22:58–59
The virgins part on the other hand is a lot more iffy. And Muslims generally believe it's not acceptable to kill a single innocent, since the Qur'an says so, so only a very small minority support suicide bombing like 9/11 (on the argument that since US citizens fund the military, they count as soldiers, not non-combatants).
Muslims themselves have claimed not fearing death to be a reason for past military success. For instance the quote "I have bought you men who love death as much as you love life" from one of the early Muslim generals https://en.m.wikipedia.org/wiki/Khalid_ibn_al-Walid . He said it to the Persians, whom the Muslim armies eventually defeated.