Surprises galore are to be expected in a championship with lots of teams having comparable strength. I've read it today in my newspaper about Germany, but it could have been said about the majority of the teams at the world cup:

"Middle class (among the last 32, of course, is meant). Good enough to beat most of the other teams on one day, bad enough to lose to most of them on the other. Only against the best couple of the teams or against the worst couple of the teams a positive or, respectively, a negative outcome would be a real surprise."

Wolfgang