I have never doubted the Pumas, but they have shown after their first RWC game that they are a force to be reckoned with. Here is a graph outlining their ranking rise over the years in world rugby, they, along with Italy have made the most gains over the last 2 years whilst the other NH teams have stuttered or gone down.
If Scotland win, it would definately turn around their fortunes, but I think the Pumas have the momentum going into this game and series.
The graph also shows a huge gap between the ABs and the 2nd place team Australia, I dont think it is that great now.
