There are always politics involved in military sales, so its nothing surprising. Pakistan does not have any meaningful trade with these countries so its not surprising the politicians will pay little head to PAF's needs vs their own electoral prerogatives.
And I think you meant Jordanian not Bahrain? Those ADF F-16s had come from the USAF stock ... and even if they were ex-European birds, once transferred out of their hands into Jordanian ones, only US would have a say in any future transfer or sale of those birds.