To me it's looking like:
Last 16:
Brazil v Chile
Colombia v Uruguay
France v Nigeria
Germany v Algeria
Netherlands v Mexico
Costa Rica v Greece
Argentina v Switzerland
Belgium v USA
Last 8:
Chile v Colombia
France v Germany
Mexico v Greece
Argentina v Belgium
Last 4:
Chile v Germany
Mexico v Belgium
Final:
Germany v Belgium
It all looks fairly even to me except Germany and France look a class above the rest. I'll be having money on Mexico, Belgium or the USA to reach the final and the South American quarter (Brazil, Chile, Colombia, Uruguay) could go any way, that looks really tight.