The summer they got to the final? Messi had an all time great Dm in Mascherano playing at an elite level.
They weren't tactically that good, certainly nothing like Argentina in 1986, where they among the masters of 3-5-2 system.
In 2014, it was two great players playing out of their skins to get to the final (Masch & Messi). Look at their lineup. They had Romero, a slow and a struggling Demichelis who was a disaster at Man City at that time, an under-achieving Garay, Marcos fucking Rojo, under-achieving Lavezzi, Enzo nobody Perez and a choking Higuain. Zabaleta & Biglia were their only reliable players outside of Messi and Masch.
To be frank, this team had no business to be challenging that Germany team full of World Class players at their peaks then.
Fine margins in a final though, conceded in extra-time. If Higuain scored a couple of his chances, we'd be talking about that campaign and the game in a whole different context.
Although I agree that Sabella was better for Argentina than all the other disasters they had in and around that campaign in Maradona, Martino, Sampaoli and the likes. Pekerman was okay.