India population is 1.3 billion or 130 crore and Pakistan is 200 million or 20 crore, so India population is 6.5 times that of Pakistan or Pakistan population is just 15% of India's.
So if India economy is 7 times that of Pakistan so is it's population, if its cars sales are 2 million and for Pak it is 2.85 lacs, that is 6 times less than India, so is it's population. The per capita income of India and all per capita indices are same, between India and China the difference is of light years...
But in the case of India and China, the population of India and China is same, very minor difference, 1.3 billion for India and 1.4 billion for China, BTW India will be ahead of China in 2022, but only in population.
So this is the main point, all the indices of India and Pakistan are very similar. All the indices of India and China are all very different.