Croatia is an underdog team which people shouldnt be underestimated same with Morocco. Argentina and France are the dominant team but Morocco and Croatia is proven there worth for beating strong team like Brazil and Portugal which many expect to go in the finals.
The upset matches has high probability but Im more on expecting a rematch between Croatia and France on this world cup. The pattern is same.
Every team that has qualified for the semifinals should not be underestimated. As seen throughout the world cup the least expected teams have gone beyond their normal abilities to win matches where they were least expected. I still feel that the finals would be played between Croatia and Morocco. Both teams have good defence and goalkeepers. They have also proven the ability to organise a sudden counter attack which most of the times have resulted in a goal.