I pulled off a Strike Eagle 5-25x56 EBR-7C MRAD to replace it with the XTR-II 5-25x50 SCR MIL, because the glass in mine was better, and the overall mechanicals on the scope felt exponentially more solid and higher quality. But we're also comparing a Philippines scope with Japanese ED glass (Burris) vs. a Chinesium scope with Chinesium HD glass (Strike Eagle).
I ended up swapping a few things around, and put one of my Kahles K624i's on that rifle instead, and put the XTR-II on another rifle. The Strike Eagle collects dust in the "I probably should sell this stuff because I'll most-likely never use it again" box.
The 3 XTR-II's that I have are all solid examples. I'd say optically on par with a PST G2, and slightly better than the Arken EP5 and Strike Eagle that I had. Apparently the early models aren't that great, but the 3 I have are good to go. My XTR-IIIi 5.5-30x56 SCR2 is phenomenal, as well. None of my 4 Burris scopes were cherry-picked...They were all straight from EuroOptic and sealed in the plastic from Burris.
What makes it difficult is everyone's experiences differ. What might be acceptable to someone's eyes, might look like shit to someone else. And some people's eyes are so terrible they can't tell the difference in a $100 Tasco or a $10,000 Hensoldt. I own alpha-tier glass. And I'm not going to tell you it's on par with that, because that would be a flat-out lie. But remember, the XTR-II 5-25x50 SCR was a scope with a $1,499 MSRP back in the day. So it was not a cheap scope by any means, just because the sales price is low. But they are better than a lot of people give them credit for. I'd pick an XTR-II 5-25x50 over any Arken any day of the week...And I've owned 5 Arken scopes, and still have 4 of them...Only 1 still sits on a rifle, the rest are in that junk pile bin collecting dust.