It took me a while to get that but your right on that one
Both teams knocked out in the preliminaries so they are just as good 
Anyways pre game discussion for todays games

Argentina Iran
Will say it goes to Argentina but can't be 100% since Iran plays well as seen in that last match vs Nigeria 90 minutes and both sides could not score a single goal tells you something about their defense and goalkeepers.

Nigeria vs Bosnia and Herzegovina
Don't know enough about either team to call it but will say Nigeria will win this match

Germany vs Ghana
Going to go with Ghana it seems like a German game but I think they stand a chance against the German lineup.