I have no doubts that the Paris Saint-Germain squad can beat Real Sociedad in the first leg, especially since the first leg will be played at PSG's home ground, of course this is a strength in itself playing in front of its supporters.
It is always the advantage to play at home, the players can have an extra motivation and get bigger supports. But sometimes it can the pressure because they are demanded to win at home. PSG surely has the chance to win at home, but it can happen if PSG players can play solidly. They also must play with no pressure.But Real Sociedad is also very strong at home, so I think Paris Saint-Germain and Sociedad will perform well in both legs. Even though Real Sociedad is one of the clubs that looks like a weak team, Paris Saint-Germain should not underestimate Real Sociedad.
Real Sociedad played strong both in away and home matches. Please chance again the stats during the matches in group stage!Real Sociedad is unbeaten during the matches in the group stage. You are wrong if you think they are weak team. They even becomes one of the strongest team in group stage.
First leg: Paris Saint-Germain won 3-0 Second leg: Real Sociedad won 1-0.
Your prediction looks interesting. You seem a bit underestimate the power of Real Sociedad attackers. 