Both teams played openly, although Southampton was mostly attacked, but Southampton also didn't play passively, they actively tried to attack Manchester City. Southampton's active behavior made Manchester City coach Robert Mancini feel happy, it's easier to play against an open-played club than against a defensive club. Of course, he thought like that because he was confident in the club that he coaches. In terms of attack and defense, Mancini thought Manchester City was better than Southampton.
Mancini's words were true, Manchester City was indeed more dominating than Southampton. However, Southampton was more efficient than Manchester City. The reason was simple, Kazuki was better than Dzeko. Dzeko's Premier League goals last season were just 15 goals, and he has played more games than Kazuki.