Japan is in a 2-3 zone. Even though USA is winning by a lot, I wouldn't say they are picking this zone apart. Every time they have an opportunity to get it into the high post and attack from there, the big man pops out and sets a screen on ball like its man to man. They haven't gotten many layups or attacked the baseline much either.
This is a really good game to practice an offense against the zone, because better teams will run it against team USA.