That's only true if you assume China has perfect knowledge of the source of the leak from the very start in both scenarios. In the zoological scenario, they wo

That's only true if you assume China has perfect knowledge of the source of the leak from the very start in both scenarios. In the zoological scenario, they wouldn't have any idea where it came from and might suspect it could be a lab leek simply based on the origin. It's very likely they would engage in cover-up behaviour anyway, just out of caution. And then there are other reasons why they might decide to cover things up. Ironically, a Chinese cover-up is absolutely useless evidence towards a lab leak hypothesis.