Earlier quoted context omitted.
Even if all of that is true, China has had so few covid cases that even that wouldn't explain the difference.
Sure they did aggressive lockdowns. Welded people into apartments and buildings. Etc. and that absolutely contributed to lower covid numbers. But it doesn’t change the fact the reported numbers are massively censored and doctored.
Claims to the contrary are fringe conspiracy theories. The "lab leak" hypothesis is way more probable than the idea that they have hidden 3 million deaths and the associated covid spread... It's just not possible.