I guess, you have never been in Sindh, especially from Ubaoro to Sukkur or Khairpur. There is no road simply, lol. 100kms take 2 hours. You have to drive on a single road aswell, near Ghotki.
There are not even proper toll plaza's. A guy would be standing with a Bamboo and other guy gives u the ticket, lol. They are making few, or i guess they are already built a few, Ubaro toll.
I have driven on GT Road and to be honest, its good, really good, apart from the small cities and crossings come in between.