Marseille will face PSG in mid-October. This is PSG's home match. If Marseille manages to beat PSG in this match then I would say Marseille is a worthy contender for this season's title. If PSG wins against Marseille then we will see PSG dominate this season as in previous seasons. And PSG will win the title at the end of the season. Personally, I think Marseille will lose their consistency very quickly and start going down the points table.
It's just paper calculating because football is not like math where we can count it as the dominant champion. because the session just started, if happens like your count, the PSG domination will not be like expectation because we don't know next, maybe the player got injured or something happens in the middle session that makes the situation change.