Wenger is confident his side can mount a serious title challenge this season.
“You have to analyse potential of the team,” he told The Daily Star. “Manchester United won one game against top-four teams and that means they have done less well than us against top-ten teams.
“They made the difference at home, winning 16 games.
“We lost the championship last year in the first 14 games, when we lost five – after that we just lost one.
“I am convinced the difference of potential is not as big as the points indicated.”
“All you can say is that the numbers of Ronaldo were always big in their games,” he added.
“He scored 42 goals one year and then 24 or 25. A player of that calibre is always difficult to replace.”