As far as which culture has more healthy accountability.. plenty of corruption to go around on all sides, the comparison would be pretty nuanced.
I'd say that China has a lot more low-level corruption, as a bigger % of their economy, what with large swaths of the country being pretty third-world, but also more accountability for senior people who fuck up badly. They executed a baby food exec who poisoned kids, while nobody saw a day in jail for poisoning the city of Flint. Rick Snyder probably has a nice lobbyist job.
Or, look at Covid -- the mayor of Wuhan and governor of Hubei were sacked over their poor initial handling. Is NY gonna elect a Republican over it? TX elect a Democrat? No way in either case. Maybe we have less accountability in some ways specifically due to the 2-party system's polarization. Arguably Trump lost over it, but the guy literally got covid, right before the election, after downplaying it for 6 months and still got the 2nd most votes in history.