According to an article written in dawn by Feisal Hussain Naqvi, Not a new debate in Dawn editorial on 23rd April 2010, the Constitutional amendments have been challenged in Pakistan no less than 8 times. (the article is available on e-paper but not on Dawn regular columns hence I was unable o provide the link)
In five of those amendments, the Supreme Court give an outright verdict that an amendment by parliament cannot be over ruled or challenged by Courts.
In two instances where in one a stay order was granted and the other where it was revoked by LHC, both times the decision was promptly annulled by in one instance by a larger bench of the Supreme Court and in the other the decision of LHC over turned by SC.
The only case where the court was of the opinion that basic structure can not be changed was the time when the question before the Court was that whether Musharraf, yes the dictator can do it. Court said no. However when he did do it anyways and passed the 17th amendment the Court was asked the same again.
The Court was of the opinion that while Musharraf could not have changed the basic structure the parliament was fully entitled to do it. It pointed out that just because the 1973 Constitution had some basic feature did not mean that it was the job of judiciary to enforce those basic features.
PCO Iftikhar Muhammad Chaudary and Javed Iqbal were in the five member bench that gave the verdict.
In two instances including one where the court was asked if parliament passes a resolution to make Pakistan a secular country, would the Court still be bound by it. Chief Justice Ajmal Mian concluded without answering to the question posed that the basic structure theory has been consistently rejected by the Supreme Court of Pakistan.
So the question is with seven instances where Supreme Court has clearly said that parliament has the right to amend the basic structure, in two cases it takes into consideration India's example and rejects it, and agrees that any basic structure principle is to be exercised by the people of Pakistan through the ballot box, will these Courts follow the rule of law?
Also note that Qazi Anwar has already disappeared from the tv screens after he was asked by Samaa anchor that whether he appeared in Dogar court. Akram Shiekh does not answer questions regarding the previous verdicts but starts firing off rhetorical comments.