Lens were unlucky in that match against Parish Saint German, it is true that PSG had 55 percent chances of winning the match but In football anything can happen, and from the performance of lens this recent time, no one can beat his chest and predict PSG winner of that match untill lens were reduced to 10 men due to red card to S. Abdul Samed as early as 19 minutes of the match. Had it been that lens won in that match, they would have been 3 point below PSG giving them more hope in the title race, but revice was the case, PSG is now leading with 8 points clear. That's much hope for PSG.
I wouldn't say "unlucky" in that sense. PSG is just a better team and Lens is unlucky that they weren't bought out by a billionaire person to get so much money in the club, if we want to talk about unlucky then we can talk about that. But, if we are talking about unlucky in the sense that they could have won this game if it weren't for this or that, then we are going to fool ourselves.
This game was over even before it started, PSG decided they need to win this game and put on a serious face and when they do that not many teams in the league could stop them, I believe nobody in their league could stop them. Sometimes they play without caring about a win, and they lose sometimes on those games, but when they care? They can beat anyone.