Everyone of the instances you cite, the Europeans lost either politically or militarily (except for Britain, but WWII caused her to lose the empire, so in a sense they also lost).That's true, but we were discussing their ferocity. They lost for two reasons: (a) they were fighting on someone else's land, not their own (people will fight much more fiercely for their homeland than for someone else's), (b) political issues. These reasons are why we lost in Vietnam, of course.
The Euros will be fighting in Europe for their homelands, the Muzzies will not.
You can even be fighting on your own soil and lose if you are poorly led. I think Europe is without strong leadership and the people themselves are more interested in chasing pleasure and material goods than preserving their freedom. I don't think Europeans are as committed to liberty as Americans are. I think they want peace and safety. If they could buy a few more years of same by entering into some kind of semi-dhimmihood status with their Islamic populations, I think they would jump at it. I believe the American Left has the same mentality. I hope I am wrong about this situation. But I believe in the prophecies of Daniel and Revelation, which indicate a revived Roman Empire under a leader who I believe will be either a Muslim or a Leftie the Muslims will embrace as well as the native peoples (I am not talking about a "Left Behind" theology, either. I am no Dispensationalist.) The stage will then be set for the Last Battle on the plain of Megiddo in Israel. (It is appropriate that the first recorded battle in history was fought there and that the last will be. Interesting.) See
this link.