It isn't merely the disparity talent wise, it's the depth of talent. When Walz decided to go to hockey style line changes the US just wore Chile down. This is a physical team, more so than the U17 team, and they are perfectly willing to throw their bodies around.
Blackwell is a nice, quick, physical player, and wherever she goes she's going to be a handful at the next level. Once again CW shows how willing she is to crash the boards and muck it up. She's a brute and can dominate a game in many differenty ways. Joens has shown a nice game going toward the basket. ND has a baller in Peoples who has a nice all around game.
The team as a whole has had problems with the slippery international ball, especially at the line. Hopefully as the games continue they'll become better accustomed to it.