Wenger believes tactics in the Premier League have changed massively during his time in England.
He said: "When I arrived in England I would say there was one rigid formation, 4-4-2.
"Today teams are more versatile, they can go to three defenders, five defenders, they can go to 4-4-1-1, 4-3-3, 4-5-1, all kinds of variants.
"I think the formations teams use are much more flexible than 15 years ago, more adaptable.
"So yes, evolution has happened, aided by a lot of European games and the influence of foreign players.
"You can call it evolution but to reduce it to an overall point you would say the midfield has been strengthened and the attack has been weakened."