it's a competitive examination within each province. please try to understand that apart from competition we have a federation and to give each province a fair share in federal government the quota operates.
it's like ten people know how to play cricket and ten people know how to play football. you cannot judge both of them on the same scale. people from balochistan or interior sindh lack facilities that cities like lahore provide. so it's natural that some sort of safeguard should be provided to these people