Surprises will always be present in every tournament and here I don't favor one team because I'm not sure the big team with big players can perform well throughout the tournament. So I will only predict when the match will begin.
Both Brazil and Argentina have not been playing up to whats's expected of them, Both teams last 3 tournament have been disastrous, despites going to those tournaments as among the favorites, It won't be surprising though if there is another winner other than Brazil and Argentina. Chile used to be a tough team too, they are the defending champions after winning two consecutive times, but they seem to be having a series of bad form too. So no one can tell for sure who would win this.