It's quite possible for all Punjab candidates to get through Insha Allah... coz there's also the 7.5% open merit... and 7.5% of 252 seats is 18 seats. So, going by past trends, more than half of these seats should be filled by candidates from Punjab... thus leaving space in the 50% Punjab quota, making it possible for the lower merit Punjab candidates to fill these seats... (provided women quota doesn't take up those seats).

The scenario can get complex... but umeed per hi to duniya qaim hai!