If you wanna play case for case, we’ll be reading the China stack until heat death

While I absolutely do have the perception that Chinese businesses are more corrupt than Western businesses, admittedly any sort of data or analysis would be welcome.

that's kinda that point... you dont get any data from China.

You don't trust health data from tobacco companies either, but you can still figure out ways to analyze the health of tobacco.

This certainly is not my wheelhouse, but I assume someone has made some attempts to analyze this?

At least you know that some forces existed where this got documented. Good luck with that in China!