The quality of all the Chinasoft gear these days, is 90% as good as the real gear.
No, they're on two different universes.
I'm by no means a stitch counter or anything, but (ironically) the stitching on RS/quality gear is miles ahead of the repros. Literally.
Double/triple stitching on stress areas, whereas you're lucky if the clone has a decent single stitch.
Molle panels are aligned and spaced evenly, clones often sponsor rows that close in together as if it was a friday night job.
While it's true that some repros use genuine material (TMC and some Emerson items), it is also true that material alone isn't a sign of quality. It's how it's been put together that, imo, makes or break a piece of kit. You can have the best material ever made, but if it's assembled by monkeys it'll still be worse than the cheap nylon assembled by a professional tailor.
With that out of the way, airshit replicas are perfectly serviceable by airsofters, the example is the JPC, 99% of the JPCs seen at a field are clones. Some look OK, others look shit (like my Emerson that I wore twice and it's currently sitting in the closet).
I do agree that the quality went up a lot from 10 years ago, but saying it's 90% of the real steel is just wrong.