Lots of credit to Chile, they played a good game and are deserving champions. Other than Jara, I find them easy to like. Their aggressive style of play is a rarity in international competition and their attacking flair in combining attacks is really fun to watch. Alexis had an outstanding game, although Vargas and Valdivia were shut down for the most part. Vidal played his role well and was all over the field. Lots of credit to the other midfielders who gave Chile a numerical advantage at the back in defense and in midfield in attack. Playing 3 at the back was incredibly risky, but it paid off in spades. The real tactical advantage of Chile's formation though, was in the midfield, as Argentina rarely had space to crank up the intensity of their attack. Furthermore IMO, the defining characteristic of this game was the excellent midfield defense played by both sides .
Martino made some pretty baffling decisions, namely bringing on Higuain instead of Tevez for Aguero. He was forced to play Lavezzi for an injured Di Maria early, which I had no problem with, but Banega for Pastore is a straight switch, which shows a lack of creativity. Argentina played the same style they have been using since the WC last year, which is defend in numbers, hit hard on the break, but ultimately rely on individual brilliance to unlock the defense. Well, there wasn't much support from the midfield as Pastore and Di Maria were asked to track back, leaving only Messi and Aguero firmly in attacking positions. Pastore, Di Maria, and the FBs did come forward to support attacks eventually, but by then Chile was already organized and ready to pounce. If you're going to play a second holding MF in Biglia in addition to Masch, you have to trust those 6 (maybe with some help from Di Maria) to defend, and leave some players up front to attack. Argentina has played overly conservative the past two tournaments, which has led to positive results (2 finals), but which also required two matches decided by penalties (Colombia in the quarters and last year against the Dutch in the semis) and lots of 1-goal games (Switzerland and Belgium in the WC, Jamaica and Uruguay in this competition). While this has been a positive in terms of results, there should be a happier medium between a more aggressive and opportunistic defensive strategy and the conservative approach they are using now. I'm not sure if Martino is expected to continue as manager, but AFA should consider what direction they want the team to take ahead of WC qualifiers and next year's Copa America (if it still happens).