Originally Posted by gonzo

World-class cities (6 years ago)

Alpha world cities (full service world cities)
* 12 points: London, New York, Paris, Tokyo
* 10 points: Chicago, Frankfurt, Hong Kong, Los Angeles, Milan, Singapore

Beta world cities (major world cities)
* 9 points: San Francisco, Sydney, Toronto, Zürich
* 8 points: Brussels, Madrid, Mexico City, São Paulo
* 7 points: Moscow, Seoul

Gamma world cities (minor world cities)
* 6 points: Amsterdam, Boston, Caracas, Dallas, Düsseldorf, Geneva, Houston, Jakarta, Johannesburg, Melbourne, Osaka, Prague, Santiago, Taipei, Washington
* 5 points: Bangkok, Beijing, Montreal, Rome, Stockholm, Warsaw
* 4 points: Atlanta, Barcelona, Berlin, Budapest, Buenos Aires, Copenhagen, Hamburg, Istanbul, Kuala Lumpur, Manila, Miami, Minneapolis, Munich, Shanghai

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Evidence of world-class city formation...

Strong evidence
* 3 points: Athens, Auckland, Dublin, Helsinki, Luxembourg, Lyon, Mumbai, New Delhi, Philadelphia, Rio de Janeiro, Tel Aviv, Vienna

Some evidence
* 2 points: Abu Dhabi, Almaty, Birmingham (UK), Bogotá, Bratislava, Brisbane, Bucharest, Cairo, Cleveland, Cologne, Detroit, Dubai, Ho Chi Minh City, Kiev, Lima, Lisbon, Manchester, Montevideo, Oslo, Riyadh, Rotterdam, Seattle, Stuttgart, The Hague, Vancouver
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....I doubt, in 6 years, Dubai has climbed to Alpha status (World-class maybe...I don't know).