When asked if he thought the Champions League was over-rated, he said: "I think so, yes.
"I can name managers who have won it and you would be surprised where they are now.
"It is a cup game and is not a championship. The team who wins that over 38 games is the best team.
"Was AC Milan the best team in Europe last year? I am not convinced. "It becomes so difficult in the championship and a lot of teams do not turn up in the Champions League."
Wenger stressed: "The work of a manager is in the championship. I feel you need to be a good team to win the championship.
"The Champions League is still a cup game. Of course I want to win it - but I cannot say at the moment that the team who wins it are the best in Europe. "The Premier League is the hardest competition now. You don't have to win as many games in the Champions League as you do in the championship."