Yeah the US women have injury’s too. The Korean women seem to have great jumps too. I personally think if they went clean the current US seniors are behind them.Almost all of the top women in the US have suffered some kind of major injury in their careers. A 3+3, which is what the maximum is for most Japanese and Russian women, is not going to be an automatic catalyst for injury and not being reasonable, much to the disappointment of some posters.
I think this is a developmental thing.