If Leipzig would be in a good shape themself then i would agree with your prediction but so far the performances of Leipzig in this season where just as disappointing as the ones from Paris. For many experts Leipzig was the big contender for bayern for the Bundesliga title and now they are only on the 8th position. It's the same in the Champions League where they are in the last place and even lost against Brügge.
So yes PSG is not in good shape, but it should still be enough for Leipzig.