Is Ranbir Kapoor India�s biggest superstar ever?

Every filmmaker � successful or relatively new � has to cater to his lead actor�s mammoth ego, tantrums and starry demands, at least until his film releases. Something like this happened with Abhinav Kashyap too, as he dealt with his Besharam star Ranbir Kapoor, whom he considers to be the country�s biggest superstar. But still, Kashyap isn�t complaining!