China in particular has a good reason to be weary of organized Christianity ever since a guy claiming to be the younger brother of Jesus started a civil war that killed at least 20-30 million people: https://en.wikipedia.org/wiki/Taiping_Rebellion
Yet China had good reason to be impressed by Marxism, also a Western import, because it killed 45 million. In that sense, I understand why Marxism would be more impressive than Christianity to a people who never had freedom. It won and killed more people.