Next time there is a PSG - Lens game which is going to be really important for the league title as well.
I mean the point gap between these teams is 6 now. If PSG win this game I don't think there would be any title race as of then. Even now it is doubtful but PSG's inconsistency is still a hope for Lens now. In their latest head-to-head game Lens destroyed PSG by 3-1 home. I wonder how much they can resist in Parc des Princes. I don't expect another win by Lens of course but even a draw would be decent for them here. Because after that maybe PSG stumble in some other games which would be in favour of Lens. However I still don't believe PSG will lose points this time.
Even though it is quite doubtful to be able to win in this match, I think PSG will return to their winning ways. This is important for PSF, especially when they are up against their closest competitor at the moment and this could be an opportunity to continue to widen the gap in the standings. On the other hand, the problem of inconsistency that you said is true and I am quite confused about whether to bet on PSG or Lens. But what is certain is that if PSG cannot win, then a draw is a good enough final solution than having to lose against Lens.