10-4, I apologize, I'm used to arguing with the xcr faithful.
The following might help:
Weight is not comparable until you go with the light profile xcr barrel. Major hit to accuracy with those. 3 moa, might as well buy a tavor... Which is more compact, balances better, and more reliable.
I saw more low level reliability issues (parts falling off) and stoppages with my two xcr's than I have with over a dozen ar's combined. Just my personal experience. Nutnfancy's may differ
The xcr is $2700 for the lightweight keymod. That buys you a vltor/ noveske ar with a stainless lightweight profile barrel. Sub moa accuracy, and lighter weight than any model of xcr. Or you can go the other way and pick up a mid grade ar for $1000 less than the xcr, that's still a more accurate, and reliable rifle. And the same weight.
The xcr has two things going for it, the control placement is excellent, and it's nonrestricted. If the barrel attachment method were revised and another manufacturer with tighter quality/tolerance control built it, it could be everything the xcr's fans think it is. But you don't know what you don't know, until you know it...