Hard to compare across groups, but as UcMiami notes, the USA is the only team to win all games bu hitting 21 (or 22). France has one, Russia has one Hungary has one and Australia has one.
The USA net margin is 47, same as France.
France and Hungary should be interesting, the last remaining matchup of undefeated teams. I think France should win easily.
Brazil continues to underperform, with only one win against Mexico.
The USA will probably match up against Estonia in the round of 16. I assume Estonia will lose to Australia, but unless Brazil beats the Ukraine, (unlikely), Estonia will be solidly in fourth.