Wenger said: "You need to be inside the group to know that. I don't have that feeling, but we are a few years now where they have been very close, so maybe it has a weight.
"But at some stage you have to get it out, and the best way to get it out is to go out on the pitch and turn up and win a big game, a massive game. Tomorrow they have the opportunity and the players know they have nothing to lose.
"I think the judgement is severe and not deserved.
"But at some stage you have to be there. At some stage you have win it...and this team is strong enough to win the Champions League or to win the Premier League.
"Unfortunately for them, Liverpool this year was a tough opponent. Nobody would have predicted that Liverpool would make up 15 points difference on the rest of the pack, and so let's see [how Arsenal get on against PSG].
"I'm confident that they can overturn the first leg, and they have the needed quality. But of course, you need to have a great offensive performance, but you need as well to be capable to stop this PSG team, to stop them expressing their talent, which is not easy.
"They are playing at home, they can smell the final and will be difficult to stop."