@Baal
So it has a lot more to do with the coach's preference and habits than what one would think.
Sure seems that way to me.
It is amazingly rare that I have seen coaches take into account the build or intrinsic capabilities of their students, even kids.
Think about this: some kids are taller and will end up more like Xu Xin or Samsonov, and some kids even when younger are shorter and thicker and will end up more like FZD. All the same, when they are really young they are just kids and they look a lot more similar to each other
at that time than they will later when they get older. So from what I see coaches pretty much treat them all the same way, using methods that in their experience work well (often the way they were coached). Then later on, when they are teenagers and coaches can start to see better what they are going to look like as adults, they already have strokes and techniques that are a lot harder to change.
I imagine that when they were both 10 years old, FZD and Xu Xin maybe didn't look a whole lot different in terms of body shape, except maybe for height (and even then, some kids who end up tall start growing fast a little later). I don't know if this is true, but is it possible that there are very strong Chinese players who have more "European" looking strokes but they never get chosen to CNT if they are viewed as having insufficient potential?
I know one example for sure because he lives here and I see him every time I play: Coach Li Kewai (a modern defender with an insanely strong forehand loop) hits his loop like German players, not Ma Long or WLQ.
Anyway, it comes down to once these kids reach teen years (assuming they started playing much younger, as with nearly all good Chinese and European players), how much do player's techniques change? I would suggest not a whole lot. They just get better with what they already have.