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.
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.
Yep. In theory, PSG should be superior against Real Sociedad. PSG has better quality players and they have more experience in UCL. PSG should be easier to deal with the pressure to win the match in knock-out phase. PSG also has a good squad depth, specifically for the attacking line. It is a bit different with Real Sociedad, they have no many quality players, their squad depth can't be as well as PSG. However, it doesn't mean PSG is impossible to surprise us.
Another advantage of PSG is they have an experienced coach for UCL competition. Enrique is very familiar with UCL because he ever won it with Barcelona in the season of 2014-2015. He also won UEFA Super Cup and FIFA Club world cup in the season 2015-2016.