Entry tests for medical schools in Pakistan must be getting very lax these days.
Going from 641 to 660 is meaningless. Difference is like dumb and dumber. Seriously.
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You are right Faisal bhai however the magic number of 660 makes you eligible to take the entry test of most or all medical colleges. In the past mostly all the colleges had a merit system where 850+ was needed to get admission.
Anyway I am sure CJ has got enough authority/resources to get admission for his daughter. The problem however was to justify the admission with 640 marks, which could have been a bigger issue to handle than this current one. Thats why the whole exercise was conducted so as to avoid any future problems :)