Wenger said: "It was a battle but in the first half I believe we were really on top of the game.
"We had a lot of fluency in our game and at 1-0 we wanted to keep them under pressure but in the second half they made a real battle of it.
"There were a lot of long balls, they played a bit higher up. It became different and we had the deflected ball to concede the goal.
"But we had the resources to come back and win in a convincing way because we kept going.
"I think we have scored 16 times in the last 33 games in the last 15 minutes and we did that again today."