I understand your concerns, unfortunately Karachi is no more safer.
This however do not means that we wont have to step up our defense in Turbat.
The positive with Turbat is you can at least stop and check and suspicious/unauthorized movement well away from the actual base by setting out an outer perimeter. In Karachi the security agencies do not have this luxury as it is a metropolitan city with lots of population and business around the base area so you can stop any one, you need to identify the wrong guys.
In Turbat with minimal chance of civilian interference the security agencies will have the option to check everyone entering a certain declared zone (I wont call it Red Zone with all of the things happening in Red Zone Islamabad