Children are children the world over.
But I'm not convince that western children are as fit as their Chinese counterparts are.
As a residual from the one child policy the Chinese are quite careful about their family planning. Whereas it seems haphazard for us.
We have much older mothers and fathers for instance - this is not ideal and children are that bit weaker.
I live in Germany. The difference between the weak and sickly local children with their sedentary 50 yo parents who spent most of their lives indoors, when compared to the outgoing refugee kids is quite noticeable.
I absolutely expect our children to suffer.