Mini:
Total no. Of seats for 2012 are 198, the rest ie 49 are carried over seats from previous years. The carried over seats remain in the same quota in which they were announced. So, AJk cannot have a carried over seat of panjab or sindh.
As far as AJk is concerned, you should be thankful to ED.
2% of 198= 3.96 rounded to 4
Whereas for GBFAtA : 4% of 198 =7.92 is rounded to 7.
And as far as quota for territories and provinces is concerned, it is on the basis of population, so that every region of Pakistan is represented in public services as per it's population. If doesn't have anything to do with educational facilities.
And as far as educational facilities are concerned, I welcome you to visit tribal areas, your this misconception would be cleared.