I don't understand what you are trying to say. What exactly is "Real Bengal"?
I'd argue that being a Bengali Hindu is being more true to your roots since Islam came much later and is therfore "foreign".
These things are completely subjective and open to interpretation based on what you personally consider as "Real Bengali".
Dear I think u became very upset. Well just answer that whom do u think really represent Bengal e.g. WB or Bangladesh? Just in one sentence.