You can't compare this PSG team with the Barcelona team that Luis Enrique once managed and won the Champions League title with. PSG has several good names on paper, but they have had their problems in the Champions League as well. They could not beat Dortmund in the second game and they got destroyed by Newcastle 4-1 in the first game and couldn't win the second game either. Where is Newcastle now? Out, they are not even in the Europa League.
I think these results in the group stage are reason enough for Real Sociedad to assume that they have a good chance to progress to the quarterfinals. I am not saying they are the favorite, but I am saying they have a good chance.
It's not a bad opinion and you have a reason to say it, for me the main strength of Real Sociedad is in defense, maybe in the group stage Real Sociedad can rely on defensive games to continue to collect points but in round 16 the elimination system will be applied this means that it is not enough to rely on defense each team must collaborate between attacks and defense so who is better? PSG who relies on attacks or Real Sociedad that rely on defense we will see it in the upcoming match and if you ask me then I prefer a club that relies on attacks. In my opinion, PSG will qualify from round 16 and Real Sociedad must come out earlier, I might be wrong but this is a prediction.