This runs contradictory to your previous statements!
Not only per capita income is lower than that of India, it is also costly! Why would any Indian immigrate there? This only proves that BDians go to India, they have the incentives...
No, there probably is very little difference in GDP/capita between BD and India now. When BD re-bases to 2011-2012 base year then the two countries GDP/capita will be pretty much equal.
For educated middle class people India is better, but for the poor BD offers a better standard of living.