The Gunners fought back to beat Liverpool at Anfield last night.
Wenger said: "With what happened on Saturday (to our rivals) we knew we needed to win at Anfield. We did that, now it is down to consistency.
"The team who wins this title will be the one who is the most consistent, and nobody has done that yet.
"Chelsea will drop points, they have done so already and they will do so again.
"Everyone will do that. There are so many good teams, like Liverpool. They have Torres and Gerrard back, Aquilani will get fitter and many teams will drop points at Anfield.
"They played in the first half with an impressive level of performance. We now have to show consistency and character to continue in this vein."