PSG is undoubtedly a strong team this season. They have invested a lot in this season, since they have entered the Champions League final this season, now they are eagerly excited to become champions. They have won the Copa de France trophy a few days ago, this season there can be two trophies for them if they can win the Champions League trophy. I think PSG players are much stronger than inter at the moment, so they will definitely play their best performance against Inter.
I see PSG team is considered as favorite on most of the gambling sites. Even Google prediction has PSG team ahead. I don't know on what statistics PSG team is considered as favorite.
PSG and Inter Milan are both very strong. Inter Milan gave full effort in Champions League matches this season. And because of this, the team failed to win both Coppa Italia and Serie A titles. Milan was eliminated in the semi-finals of Coppa Italia and lost Serie A title due to losing points in the last match of Serie A. Inter Milan failed to win at the last minute.
Inter Milan qualified for Champions League final by defeating Munich and Barcelona. I consider PSG and Inter Milan's chances of winning are equal so far. Both have strong squads and experienced coaches.