I don't know the reason why some people say PSG's performance this season in Ligue 1 is so bad, even though PSG was unbeaten until week 14 even though they only won 10 matches. Just because of a draw some people say it is bad, but the fact is that no team can maintain its run without a draw in a season.
PSG have drawn 4 games this season. Last season they ended the league with 10 draws and 2 losses. So I think they are still at the same level as last season. I agree with you that no team can keep winning games. But maybe 2 consecutive draws against teams in the middle of the table seems to be the reason why some people say PSG are doing badly. But I think PSG are still very strong and dominating Ligue 1 this season. They are 5 points ahead of Marseille and they are still unbeaten.
I think is that unbeaten that is still keeping them there, 5 points is never enough to be happy about because if they mistakenly lost any and Marseille continue to win definitely the gap will get closer and it going to be hard for PSG. The French league is not challenging, I ranked them last among the top five league because there is not competition, PSG seem to be the only team that can buy any players of their choice no matter how expensive, sometimes I called them one team league because one club dominated all the time. I'm not bothered with PSG performances because I believe they will get back, the transfer window is near and I know they will make use of it to straighten their strength.