The match was dominated by Santi Cazorla's hat-trick.
Wenger said: "There could only be one answer and that was on the football pitch.
"Success came with the quality of our game. We focused on the quality of our game and played.
"Our ambition is to finish as high as we can and win our next game, that is all we can do. We have to focus on the quality of our football.
"We have games based on movement and technical quality and that demands freedom of initiative and when you are in a crisis that suffers sometimes, but we have to go beyond that and focus on the way we play football."
When pressed on the recent harsh criticism of Arsenal, Wenger added: "It depends on what you mean by a crisis. If you call being slaughtered by everybody then we were in a super crisis!
"In our job you need to be mentally strong. It is a test when you have been in a position like we were in.
"In the championship our run is not so bad recently.
"We lost just one of the last six, but because we had not won them and were starting in the middle, no win becomes highlighted.
"This run is not fantastic, but not disastrous."