Rape laws in india are quite peculiar.
If a man and woman get jiggy before marriage and then the man refuses to marry her for any reason she can lay a claim of rape on him even if she wanted it at the time. And the police will prosecute it exactly as a rape. It was designed to stop men proposing marriage and then abandoning the women after they got what they wanted.
On the other hand, if a woman were to get caught with a man pre-marriage it is very common for her to claim she was raped/forced. The laws are not like they are in the UK etc.
Bhai Kahn Singh Nabha has done a great task of explaining Gurmat philosophy in this book.
There is some common ground between Gurmit and other faiths, but the fact remains that the Sikh faith is independent in its own right...
A great book in English giving counterpoints to arguments made by Hindus - http://discoversikhism.com/sikh_library/english/sikhs_we_are_not_hindus.html
Also if anyone wants to share any other arguments made by others we can give counterpoints if needed.