I would say, it is men who had opted islam, because they had freedom to marry more than one woman, and secondly they could suppress the ladies and use them for their service, but in other religions, both the sex are treated equally and given same previlage and participation.Besides they can marry only one, and get divorce after a period of 3 years to get married to the second. What ever hindus that were converted to muslims were belonging to the sudhras. Those who did not wanted to convert, committed suicide (like King Prithviraj Chawhan's family) and remaining fought against them to throw them outfor e.g. Shivaji Maharaj, Prithviraj etc