I firmly believe that Muslims of the Indian subcontinent are racially inferior, not only due to inbreeding but also as a result of generations of continued Islamic education. However, they can still be corrected by placing them in re-education camps and addressing the issue of inbreeding. It will take generations, but it can be done, but it's not possible under a democracy. A Hindu empire has to come. Pakistan can also be corrected.
Intellectually, the difference is insane. The per capita ratio of genius Hindus vs Muslims is easily a factor of 100:1. And it does not matter if it is Indian, Pakistani or Bangladeshi Muslims. I do not think it just a matter of culture. In Chess, many of them try hard, but they can't even remotely compete with Hindus or for that matter compete with 2/3 of the world. Same case in high level Math and Programming from what I saw here in the US. Same in ISRO/Physics, Spelling Bee, Business/Economy etc...
Athletically, I used to think the gap was closer. Now I have changed my mind. When you look at the results in the past few Olympics, cricket, hockey etc... it is clear that Hindus (and Sikhs) are significantly superior. We also dominate all raquet sports. Even squash, where we have 3 of the top 50 ranked men, and Pakis and Kanglus have 0. If Indians, Chinese and other East Asians had taken squash seriously, Jahangir and Jansher Khan might also have won a lot less. Those two Khans are also Pashtuns, a different breed.
The Pakistani Punjabi population is extremely diabetic and overweight. Much more so than Northern Indians. Kanglus need to gain both height and muscle to compete. Having said that, all of South Asia sucks at sports at the global level.
The lone Paki exception Arshad Nadeem never competes in the regular Javelin events and has had several major injuries. Past steroid or other performance enhancement drug use is not out of the question based on typical Paki "pious" Muslim behavior.
Punjabis and the rest of Pakis and Kanglus also miss out on Southern Indian high IQ genes. I am not TamBrahm, but my experience with them suggests a very high average IQ.
You also have to have a pretty low IQ to convert to an Arab religion, think of white men invented loudspeakers as a crucial part of your religion, cover your women head to toe (in a hot weather region where you all genetically need vitamin D from direct skin exposure to sunlight), kill animals on the streets as a religious event etc...
