Higuain, Aguero, Di Maria, Messi, Mascherano are world class. Gaitan, Lamela, Lavezzi, Biglia are very good players. He could afford to leave Dybala, Icardi, Tevez, Zabaleta and Pastore at home ffs. That is by far the most talented squad in South America that is the point. I didnt actually mean every single one of them is world class because even Germany and Spain wouldnt make the cut in this case.
Chile in comparison has only Alexis and Vidal and then the quality drops severely to less than mediocre players.