hey bidhan the point i am saying is don't compare..its wrong to compare... just go to this site.http://en.wikipedia.org/wiki/Global_cities Global city Alpha world cities 12 points: London, New York City, Paris, Tokyo 10 points: Chicago, Frankfurt, Hong Kong, Los Angeles, Milan, Singapore Beta world cities 9 points: San Francisco, Sydney, Toronto, Zürich 8 points: Brussels, Madrid, Mexico City, São Paulo 7 points: Moscow, Seoul Gamma world cities 6 points: Amsterdam, Boston, Caracas, Dallas, Düsseldorf, Geneva, Houston, Jakarta, Johannesburg, Melbourne, Osaka, Prague, Santiago, Taipei, Washington, DC 5 points: Bangkok, Beijing, Montreal, Rome, Stockholm, Warsaw 4 points: Atlanta, Barcelona, Berlin, Buenos Aires, Budapest, Copenhagen, Hamburg, Istanbul, Kuala Lumpur, Manila, Miami, Minneapolis, Munich, Shanghai