I do not think South Asian culture has this problem. Red Blooded Hindus are extremely proud about their past. India might have lost a lot in the past, but it will never do so again. Even if it means a nuclear holocaust.
You will find inferiority complex cucks of the "my culture is ****! everyone else is better!" in every culture. Liberals generally exemplify this, in the West, in India, in China, whevever they appear. Think of the white guilt losers in the West.
But I have come to the sad conclusion that Islam seems to generate feelings of inferiority. Those liberal Punjabis do not have the feeling of inferiority because they are very loosely Muslim.
Their religion teaches them that they are the best. But across the world, in terms of military power or economic strength, they are not. Countries that were for centuries subjugated by Muslims do better than traditional Muslim countries do in every area. The best examples are India, Greece, and Spain.
The strongest Islamic country, Iran, has it's own type of Islam that is basically an expression of it's Zoroastrian past and refusal to conform with Sunni Islam. Iranians, as far as I know, have little feeling of inferiority.
Pakistanis feel inferior because Indians humiliated them in 3 wars, diplomatically outmanoeuvred them and helped push them to status of international pariah state, despite doing equally bad things (if not worse) than Pakistanis did. National pride is a huge part of Male dignity and self-worth, and if there's not much to be proud about your country, then you will identify with some ancestors worth being proud about. Like Shah Jahan, Akbar and Aurungzeb: Afghans / Turks.
I have a lot of love for aspects of Muslim culture that are capable of preserving their heritage. But it seems to come at the cost of creating a culture of inferiority that keeps Muslim men insecure (and hence violent) enough to lash out constantly against anything that is a perceived threat.
It seems, really sadly to me, that the best way for Muslims to not feel inferior is to live among their own kind.