During my staying in Wayne State's (Wayne State University) dorm with BUET's Mechanical engineers, I eargerly asked if Indians were far more aptitude than them. They negated with many funny stories, one of which was a friend of mine got 99 percentiles in VECTOR MECHANICS along with other Bangladeshis close to his whereas IIT and other Indian products fell far behind. But seeing BUET's rating, Indians claimed that our students cheated. So came the next one and BUET's products outscored Indians again to shut their mouth up. The reason to cite it just to let you know that your deeds don't match with your words. A close relative of mine is one of the best in 'Steel Engineerings' in our Sub-continent who used to be in good list of even TATA. We have fallen behind because of the stoppage of the flow of industrialization but that doesn't mean that our DNA has changed.
That's more of Individual intelligence than general mass. And how come ur DNA is diffferent from India or at least the people from East and South East India...