Based on futures odds prior to the start of the World Cup, here are a few sides that look to be underrated and overrated.
Underrated: France +1400 (though perhaps not given a coach that benches their two best players), Cameroon +10000, Switzerland +15000, Algeria +40000
Overrated: Brazil +450, Italy +1200, Chile +4000, Paraguay +5000, Greece +10000, S0uth Africa +12500