Inter is way on the different level. They beat the winners of La Liga and Bundesliga that can't be compared with PSG, which was beating the weaker teams than them. So, it totally makes sense to argue Inter is clearly a bit better, though the odds said the opposite.
I understand your talk here, Inter has got all it takes to win the finals, because going by the history of their performance in other leagues and how they have made it to this stage from the champions league, we can say vividly that they are unbeatable, PSG could also try to an extent, as football can be a game of surprises, that we later found out that PSG win against Inter by any chance.