Arsenal`s victory over Manchester City has given them the belief they need in the Premier League title race, says manager Arsene Wenger.The Gunners have not won the title since 2004, but goals from Theo Walcott and Olivier Giroud were enough against City despite Yaya Toure`s late strike."It gives us confidence, strength and belief," said Wenger, 66."We have a bit more maturity in the side now, which you could see in the game when we were under pressure." -BBC