Sort of neither here nor there, but I was looking at how many teams from each confederation progressed to the knockout stage. Not sure it says anything, or not anything important, anyway, but it's almost vaguely interesting:
Confederation: qualified for WC/progressed to knockout (percentage progressed)
AFC: 4/0 (0.00)
CAF: 5/2 (0.40)
CONCACAF: 4/3 (0.75)
CONMEBOL: 6/5 (0.83)
OFC: 0/0 (0.00)
UEFA: 13/6 (0.46)
CONCACAF and CONMEBOL did pretty well.