Expected. I wrote a few months back that it was difficult to win more than 4-5 seats from Karachi for PTI now.
Not because of 18th amendment prevented the center from doing anything, the intent was absent in the leadership. After winning 14/ 21 seat from a single city, PTI just left it like an orphan child and did nothing.. I know they couldn't have done much, but they didn't even make noise....
I am revising my assessment now to 1-2 seats from Karachi in the next elections. If Mustafa Kamal continues with what he has been doing lately (raising voice for Karachi), he might win a few seats along with TLP/ PPPP.