Zarvan
Islam is fastest growing religion due to High Total Fertility rate and not any other reason. Muslims TFR is 50% Higher than other religion. India or Russia or Europe or anywhere.
Quality is more important than quantity.
1.5 Bn Muslims, 50 countries but still None are powerful or in Top 10 biggest economy.
There is hardly any conversion.
As far as Pakistan, Hindus are already left only 1%, Due to debt issue they converted into Islam. Now, they will safe and won't come to India as refuge. Already Millions of Hindus came to India.
In India, Muslims were 9% in 47 and today 14% because of 50% Higher TFR than Hindus. But what does it matter when majority of them are not educated enough and living in concentrated areas ?? When you have more kids and less education and income level, Life become miserable and religion doesn't make any difference.