Argentina team is not what we used to know, there are no much quality in the team anymore. If not for Messi who is playing with his last strength and carrying the team and De Maria and also the number 9 striker. The midfield and defence is not solid as before. Argentina may go further in this world cup but they are not the candidates of the finals. I don't think we will watch Messi finals this year.
Overall the Argentine team in this world cup has looked really solid. I say this because in the match with Poland I saw Argentina had more possession of the ball and attacked regularly until it produced a good result, namely the victory. So the Argentina national team in this world cup is a team that is very calculated and also really solid as a champion candidate, although I also can't predict whether Argentina will make it to the final or not.