PPSC just love settling everything in premises of court, age, qualification and so on. Major reason behind this is they so desperately lack vision and foresight, because at the end of the day it is PPSC that is made to eat the humble pie, at least past experiences proves this.

What they are good at?

In first place they invites applications (thok k hisab se), make money, (khud be khaty hain aur concern department on whose behalf they conduct exam for recruitment, unko bhi hkilaty hain). Then all of sudden they enlighten candidates that policy of concerned deptt has changed and they cant go ahead, leave candidates in limbo (e.g.Tehsildar exam episode).
Now again in this case, all of sudden rationality and wisdom have revealed upon PPSC that 1:30 formula should be applied but, believe me, PPSC has a very weak case. Had they included such conditions at the time of publication of add, it might have been a difficult story. Good luck PPSC.