I don't really think there is a lot of differences between the two. China does have a heavy hand in regulating the chats, e.g. you could have your account auto-banned for whatever the reason, if the AI finds something. Sometimes it could as trivial as mentioning e.g. 8964 in a completely different context.
But I think this is more about China wasting resources on trivial things while the US wisely focuses on more important things /s.
