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There is psychology involved, SP expects people bet the strong teams so the odds are very low, you must analyse yourself to spot the mistakes SP made in odds, and bet on better odds if you think the strong team will lose, in this case you shall bet Croatia win and Morocco draw.

True. Croatia has slight edge despite the odds. 
Both teams star player are ageing, will retire in 1-2 years but this WC allow 5 changes unlike the past. 
Argentina has more youth players but must bend old and young well in order to win. 
 
Morocco style is similar to Croatia but younger. 
Lesser experience than France. 

It is closer match than what many think, all depend who make mistake first.