If we compare PSG and Real Sociedad, I think PSG still has a better chance than Real Sociedad of winning and qualifying for the quarter-finals. Even though it is true that Real Sociedad also won group D, leading over Inter and only goal difference is the difference, but that doesn't mean Real Sociedad is better than PSG.
I like how consistent PSG has been these season even though their form is not that good in the Champions League, the progressed to these stage by luck because if not for Milan lower goal difference, they would have been out of these discussions we are having but maybe the dynamics of their performance will yield something more warble than we had before.
From another angle, Real Sociedad have been sparkling in their domestic league the past few weeks and that made me think PSG need to be careful, some small teams in Ligue1 has humiliated PSG this season, it shouldn'tbe Real Sociedad that will remove them finally.
Because after all, playing in the knockout phase of the Champions League clearly has different pressure too, what's more PSG is a team that has good dominance in Ligue 1 . Also, basically Enrique is used to facing or against La Liga teams and with the experience Enrique has like that. So ya, of course Enrique really understands the right strategy for playing against Real Sociedad later and thus, of course PSG has a very good chance of beating Real Sociedad.
I'm having some doubts even as I want to believe Sociedad can pull some stunt on PSG, in group stage some teams might be unlucky to meet one of the strongest opponents. I don't know for Copenhagen and Galatasaray in the past but they gave in their best in the Champions League group B, one of the best I enjoyed I must say and PSG suffered a lot to come out good, perhaps things might change after this stage but at the same time, Sociedad is good in domestic league. Predicting this might be hard but double chance will certainly give a good money when they meet.