women reservation bill

how serious are our political parties towards getting women reservation bill passed?why is it being opposed?women is a 50 percent counter part of men the what is the big deal if they get 33 percent reservation.they have prooved great corporate leaders wether it is kiran majumdar shaw ,indra nooyi or in past the great leader like indira gandhi or the performance of girls outperforming boys .what else needed to be done by women to be considered qualified for any of such reservations