Speaking after Saturday's 1-0 win, Wenger said: "(Micah) Richards and (Richard) Dunne were outstanding.
"Those four could play in any team, but they have added some good players to the squad. Elano was good, he can always create something and Petrov is the same, but we kept him quiet.
"If you can find 11 top players who want the same thing then it doesn't matter which country they're from. When you are top level, the most important thing is that you want to make the most of your talent.
"To find that blend is not easy, but then you have to create a common culture. You can create that when people come from a different country, but it is easier when people come from the same country."