CHINA became super power only after it controlled its population, INDIA started seeing the raise as power again only after population control. You have to look into country size and its resources for optimal population numver. US and China are very big countries and they can sustain big population and use it as an advantage. Even for India's size , 1.4 billion population is only dis-advantage, not advantage. For a country of size pakistan and with limited resources , 240m is a huge number
even rabbits can breed as much, there is nothing to be proud of population in any 3rd world countries like ours (both india and pakistan)