I personally thought that Croatia looked really good considering their opponents. I think that in the second half they definitely got the better of their opponents, they just took horrible shots.
As for the US, they look to make and early exit, Italy was looking pretty good and there is no way you can honestly compare their skill level to the US's using those two games.
And the Ivory Coast has been my favorite team so far. They are beastly on and off the ball. I hope they make it far.