I put you the same question to you Mr Indian - If any african or asian converts to Christianity, will he be treated equally by European/American christians ? Why there are so many branches/sects/subsects among Christians
Similarly if any person coverts into Islam will he be treated same with Arab Muslims? Why Ahmedis are not accepted as Muslims even though they believe in Allah ? Why there are so many sects/subsects among Muslims and why they fight among themseves.
So you need not heckle about the caste system of Hinduism. Better know about the loopwholes of other communities