I don't know exactly about what stats you guys are talking about but Inter managed to win in Munich and draw in Barcelona, not too many teams would be able to do something like that. PSG have beaten Liverpool at the penalty kicks, than Aston Villa, which are a good team but no more than that, and yes, they did well against Arsenal. I am more impressed with a team that beats Bayern Munich and Barcelona rather than Liverpool and Arsenal.
I'm sorry, but Barcelona is not very strong and Bayern is not strong this season either. It turns out that they were just lucky to win the title in their leagues. So Inter beating Barcelona and Bayern is not a big feat compared to PSG beating Liverpool, Arsenal and Aston Villa. I know that Barcelona fans will say that Barcelona is very strong, just because they were lucky to win La Liga. As a Bayern fan, I can have the humility to admit that Bayern was lucky in the Bundesliga because Leverkusen was not the same as last season, at least in terms of the way they were playing.
Barcelona vs Paris Saint-Germain
https://livescores.biz/h2h/barcelona-vs-paris-saint-germain