In the golden age of promos, the client (ie. Ford, GM etc) had the last word on wether a new tool was good to go or not. I presume this still applies to modern promos like Mustangs, Chargers etc. and I don't see complaints about these tools. But if Revell/Mobius does a non-current subject, ie. the 56 Chrysler 300, Chrysler itself seems to be more concerned with licensing than how the model will look and the model company's own bean-counters decide when it's good enough. (Correct me if I'm wrong.)
And the idea that the Chinese aren't up to measuring things is absurd. Along with the Arabs, they pioneered measuring our world.