Your idea is right but if their performance on the field is bad then the gamblers have nothing to do. Although I am deprived of betting in this game I did not participate in gambling, but if I had participated in winning I would have supported Argentina and Brazil teams. I never imagined that reputable teams would perform like this, every team works hard to protect its reputation.
But in this match of Brazil vs Bolivia, although Brazil team lost, I can still console my mind because the number of attacking players in Brazil team is very few. But it is completely beyond imagination that Argentina will lose with Argentina vs Ecuador team. I definitely learned a lesson from these two bets that reputable teams perform very badly against weak teams.