You are misinformed.......Excluding Afghan refugees of 80s (who do not have Pakistani CNICs), large number of Pashtuns (Durranis and Ghilzais) and Hazaras of Quetta city were settled in pre-1947 British times. The other portion of Pashtuns in the city are from surrounding Pashtun districts of Balochistan and another portion is from indigenous tribes like Kasi and Kakar....
Desert Fighter (a Baloch with Baloch prejudices) is claiming that majority of the Pashtuns of 13 districts of Balochistan are recent settlers from Afghanistan. Thats simply not true. Just because the province has been incorrectly named Balochistan, doesnt mean 13 districts in its north-west belong to Baloch. There are no "four million" Afghan refugees in Balochistan. There are around 3 million Afghan refugees in Pakistan , and majority of them are in KPK not Balochistan.