At least in the US, the most selective universities look at other aspects of your application.
That's not to say there aren't other problems in the States, such as negative discrimination / racial quotas.
复旦 student #1: My gaokao score wasn't high enough for 北大, but it was high enough for 复旦, so I came here.
复旦 student #2: My high school recommended me to 复旦, they gave me an interview, and then they offered me a place in the school of social science. Because of the offer, I didn't need a very high gaokao score.
财大 student #1: I took 财大's own entrance exam and qualified for admission, so I didn't put in any effort on the gaokao and got a low score. That meant my gaokao score wouldn't get me in to any other universities, so I came to 财大.
财大 student #2: I took the gaokao and my score was high enough for 财大, but not for 复旦, so now I'm at 财大.
So half of everyone I've asked fits the mold, but that seems like a low figure to me. The sample size here is only four; have I stumbled upon a wildly unrepresentative group?
For student #3 - I'm unaware of how popular the practice of having a test per university is (or how practical it is to take them as a prospective applicant). Maybe this is restricted to certain universities or majors, or works similarly to EA or ED in the US?
Why not create totally different tests each year with all kinds of difficult problems and then grade the whole thing on a curve? The only way to succeed is to actually understand what you're doing better than your peers.
That PR message becomes a puzzle when X becomes a randomly distributed number from year to year. So is 1580 a great number this year while 1400 was a great number last year?
The greatest danger would be an "emperor has not clothes" moment when random test results randomly categorize random students into random schools. That might make the test irrelevant in the future, thus not taken. And the test providers income stream disappears.
Seems to me like incentivizing deep learning over memorization outweighs losing the ability to compare absolute results from one year to the next.