Which Part you are not agree with????
That was not possible because of many reasons...
1. Islam in India was influenced by Sufeism, so Indian Muslims were liberal, still in world Indian Muslims are most liberal (We have place for shia,sunni and ahmedia).
http://en.wikipedia.org/wiki/Sufism_in_India
2. Indian terrain was not easy to control, it was mandatory to keep local hindu ruler in trust.
http://en.wikipedia.org/wiki/Geography_of_India
3. In just 3 decades entire Persian civilization was converted/killed. In your so called 1000 years 80% hindus were alive. This was due to resilience,flexibility and humble nature of Hinduism. I am hindu living in India is live example that, Islam never ruled India, It was few Muslim family who took control of delhi throne.
I am Hindu and I am alive instead of your (So called) 1000 year rule of Islam in India. While No parsi is alive in persia just after 3 decade of rule of Islam.
4. Babur (Who brought the hardlined Islam in India) came and cut throat of Ibrahim Lodi.
Read history books or UK archives.
5. By the time British came, Mughal dynasty was on its death bed. 75% of land mass was under Maratha control. Mysore,Deccan,Oudh and Bengal was under Muslim ruler.
Read Panipath III war. Mughal dynasty was weak, They called Durrani for help. Though Marathas lost the war Mughal couldn't took control of central India.
6. It was bad luck for Maratha empire that the west got industrialization, due to which they didn't get enough time to capture rest of India from the clutch of Muslim rulers.
The Marathas never fully recovered from the loss at Panipat, but they remained the predominant military power in India and managed to retake Delhi 10 years later. However, their claim over all of India ended with the three Anglo-Maratha Wars, almost 50 years after Panipat.
Which means, even after defeat of panipat, Muslim ruler were weak and they lost delhi just after 10 years.
OMG you really lack a brain!!! I've met dozens of Persian Parsis in my life, they are really proud of whatever they are and support their country - they never talk about religion they're all irani bros