#3 There are still doubts over PSG's real level
PSG currently hold a commanding 12-point advantage at the top of Ligue 1 but given the underpowered nature of many of their opponents, it still remains difficult to judge their true level.
The summer signings of Neymar and Kylian Mbappe have certainly added additional attacking firepower but there were few improvements elsewhere in the squad. PSG are not necessarily that much stronger than they were last season when they fell to Barcelona in the last 16.
The club’s two group-stage matches against Bayern Munich provided little concrete evidence one way or another. The manner in which PSG blew the Germans away in a 3-0 victory on home soil was neutralised by the relatively meek way in which they succumbed to a 3-1 defeat in the return fixture.
However good a player is on an individual level, he still needs to be part of the right collective context to truly stand out. On that basis, it remains difficult to say whether PSG are yet capable of providing Neymar with the necessary platform to outshine Ronaldo.