This is where Bombay beats the Rest of South Asia by Miles!Karachi is a unique city not only in Pakistan but in whole SouthAsia, it has a diverse population from many countries(including some european countries like poland,armenia etc). One more special thing of Karachi is it's delicious food, all kind of food from the world can be found here. The city has it's own life & charm, every person who have live in Karachi for 1 year will know what i mean, no one can explain it.
Lahore is great city, no doubt for that, but Lahore or even any other city of entire South Asia can never beat Karachi anytime.
About Islamabad it is very beutiful city but no soul no life, a very quiet city & people busy in their own life. It is more likely European type city.
But in the end i love my whole motherland Pakistan.
Karachi is quite similar to Mumbai in many aspects. Cosmopolitian Nature, A Passion for the city by its Dwellers, Highest Per Capita Income, Value for Time, Discipline, Respect for all Attitude, Night Life. Glamour
Infact, I consider Karachi to be the sister city of Mumbai.
Lahore comes with the same typical Racist Male Chaviunistic Attitude of the People of the Norh Part of the Subcontinent.(Same like Delhi)
Karachi wins handsdown.
Karachi pays 60% of the tax of Pakistan.
Infact Lahore runs at the Mercy of Karachi.