Ligue1 is a league with weak teams, if you look at the market value of PSG and Aston Villa:

PSG = 870.50 M€

https://www.transfermarkt.com/fc-paris-saint-germain/startseite/verein/583

Aston Villa = 642.15 M€

https://www.transfermarkt.pt/aston-villa/startseite/verein/405#google_vignette

The other Ligue1 teams cannot have the same market value as Aston Villa, they are below 500.00 M€, this means that Aston Villa is a very big team and if they were in Ligue1 they could be champions and dethrone PSG. That's why I don't see PSG winning easily in the game against Aston Villa