No doubt Islamabad is better and will be better as it is the capital but living in DHA and in BT could and will never be considered on par with Islamabad living.
Can a family alone walk in the streets of Islamabad, say, after midnight? What about the overflowing trash skips everywhere?
The road maintenance and so many other attributes can never place Islamabad beside BT and DHA when it comes to a peaceful, secure and an aesthetic living.
I am living in DHA and I can tell several families shifted from G sectors to BT and DHA because of the cleanliness and security.