Stats are kind if interesting.
https://www.espn.co.uk/rugby/playerstats?gameId=595485&league=244293
Possession roughly equal, though the Pumas with the advantage in the second half. Territory overwhelming to Australia! Pumas had to do a lot more tackling and both teams tackle success was pretty rough (86% and 88%). Wallabies with basically 50% more distance gained running. Set piece doesn't look so bad in the generic stats (I'll bet the analysts may have more to say about the quality of it though).
JOC (James O'Connor) (James O'Connor) got away more passes than we have seen from FH recently, and appears in the the top tacklers (Lonergan 13, Koroibete 12, Swain 11, O'Conner 10). Penalty count mostly spread through the whole team with plenty of players with one each. Tupou at 3 - scrum I guess.
In short, I don't think the stats at this level of analysis really show the game.
Valetini easy Wallaby of the match for me, Koroibete up there. Overall our defense stood up statistically but not in reality, and then we had no oomph with the territory advantage which in reality worked for Pumas whatever the stats say.
Huge game for Argentina.