Completely agree on the culture, it's not that people in one place are inferior to the other - it's just that that's the way how work is done in their country and they keep doing it as long as they are in that environment. When the same people physically move to another country, they end up absorbing the local culture and adopt and behave like the rest of the team.

That said, with all the communications in place today I think the culture is becoming global with newer generations having less and less difference between countries.