One party state literally means its the start and end of all data and news percolation regarding large events sizeable to its power-holding (be it what happened in famines, revolutions under its control and tianenmen or some "power cut" scale and reason, past and present)
Credibility is established by non-totalitarianism. Rest we correlate where more hands are involved (say remote sensing, 3rd party trade and yes good and bad videos of china inside as they percolate in whatever rate).
China has done well on lot of these matters, but then the folly assertion is this is again some purely govt-driven and directed thing to then compare with other govt in some asserted 1:1 way.
How does one visit the entirety of China to speak for everyone and everything? ...and then assert all of it is good or "better"?....speaking as some authority of consensus, when anonymous and obscure and irrelevant to begin with?
Its a very non-totalitarian, non-collectivist approach to think about in first place, I guess its too hard for some....hard-wired long time ago.