Why do you think Portugal has potential to reach the finals? For me they are a team like any other, with the exception they have one very skilled player, but that is just one player anyway. Balanced teams without a main star, like Spain, Germany or Netherlands look more promising to me. On the other hand, teams like Argentina, Brazil and Portugal are too dependant on their main stars, what prejudices their teams as a whole, because the adversaries just need to neutralize the Messi, Neymar and Ronaldo on field to have the advantage on the game.
I agree with Portugal... a team that barely managed to qualify for a place in the world cup is a long way from reaching the final.
But I disagree with what you said about Brazil, disregard the fact that I'm Brazilian
... but have you seen Brazil's games in the impeccable qualification for the world cup? How many goals did Neymar score?
The Brazilian team isn't longer dependent on an ace, it has very talented players that are causing great indecision in the head of the coach.
I really believe in an incredible performance by Brazil in this Qatar World Cup.