i think you don't know the difference between 'fatter' and 'more beautiful'.
Delhi OR mumbai has bigger scale of road and rail network ,more skyscripers ,buses,shopping malls than most other cities in south Asia .and it's not 5-7 year,they may would never have such scale.
but,on the other hand,those other cities would never have such super scale of slums,either.population most other cities can note match the amount of your slum dogs of Delhi.
what you did is to cover your own eyes and say,look,we have the best airport.and you want others to be blind as you.
and you forgot what the people need most is not a shining airport if they cant afford an air ticket in their whole life.they need better living environment,better Jobs,clearer water,better education.etc...your super fat cities has no advantage even compared to many small cities in these most important fields for the people.
if you want to convince us that your city is best,please show us you have higher percentage of people living and working in good environment,fewer traffic jams and other aspects that people cares much.i bet colombo is decades better.(if not the fatter the better)