If it's just about Arsenal team not being of equal strength to PSG it makes sense to agree with that as it was very clear by the stats in the final and the result too. But, what I wouldn't agree on is the mark on Arsenal team having worst players, that's a disrespect to them. Playing in the UCL and encountering many teams credible teams. I can't say they got to the finals by luck, they worked hard for it but only met a better side than them in the finals they lost.
Arsenal has one of the best team in the world which means they've some of the best players making the team too.
From statistics, Arsenal were behind PSG, meaning players on the pitch, but statistics are a waste of time, essentially they were equal, because what matters is reality, the numbers are just an evaluation, but on the pitch and in the action you can see the difference.
All season Arsenal made their fans doubt it too, but they believed in it and achieved excellent results, the UCL final ended on penalties, there was no real difference in performance.