Everything is still very possible, the fact that both PSG and Marseille have the same points on the standings in Ligue 1.
The same points make the competition look more competitive in the race for the title this season, and changes in the standings can change at any time. As for Marseille at this time, they are quite consistent in their seven matches, their performance is quite consistent both in defense and in their attack, in the future it looks like they will not have many problems until the match against PSG.
But different in the champions league. Marseille must be defeated by playing against Tottenham Hotspur with a score of 2-0. as for PSG, everyone will agree that PSG's dominance still looks strong to win the title again this season.
Both have the same points and now both are at the top of the standings with the same winning record, the competition may look a bit tight between PSG and marseille at this time but I don't think it will last too long, so far PSG have been tested by facing big teams in league and champions league, while Marseille actually only faced teams that were below their level in the league, while in the champions league they had actually lost points in 2 matches, so I really doubt that marseille will be able to provide a strong resistance to PSG until the end of the season.