The champions are seven points behind leaders United.
According to the Sun, Wenger, who is set to face City, insisted that they are not necessarily stronger than last season, adding that that's mainly because they were so strong last year.
Roberto Mancini's City flopped in the Champions League at the group stage for the second year on the trot, the report said.
And the Etihad outfit could fall 10 points behind leaders Manchester United if they lose in London this afternoon and the leaders beat Liverpool in the early kick-off, it added. (ANI )