Brazil intimidated their opponents. They played some great football today. While playing football in the match, they almost did samba at the same time. They showed that they are one of the strongest favorites for the cup. They passed the last 16 round very comfortably and the same will probably happen in the quarterfinals. If they match with Argentina in the semifinals, it is not difficult for them to reach the final by eliminating them. Because they play better football than Argentina.
I think the winner of the England-France match with Brazil will meet in the final. But it would be a little difficult to know who will win the final

Don't forget that this Argentine team won this Brazilian team in the Copa America finals. It doesn't matter who played better football. Its a single knock out match, anything can happen. Brazil are a very good side no doubt but they are yet to meet a very good opponent in the world cup. It's no secret that they are the favorite but favorites don't always win the cup. They have the upper hand to win Argentina if they meet but it still doesn't guarantee that they'll win.
The best teams of this tournament so far are France, Brazil, England. Then the second level of teams are Argentina, Portugal, Spain, Netherland.
I don't know know who would win exactly but I'm pretty sure the winner will be one of these teams and the final will be played by two teams on this list.