There was nothing strange about what the PAF did there. The only difference is the IAF was caught napping because they were chasing behind the smoke called MMRCA instead of upgrading the MKI itself in phased manner. The IAF should have upgraded 50 MKIs with Irbis-E and 117S and inducted them from 2015-17, along with 200-300 RVV-SD, which the Russians offered years ago.
Hell, just buying the RVV-SD was more than enough, forget the MKI upgrade. This missile is equivalent to the Aim-120C7 and has a 35% greater range than the RVV-AE. It's basically the IAF bungling due to lack of a Plan B. Now there's a new missile available called the K-77M, it has a range of 200+Km with a digital AESA seeker and dual pulse motors, basically what the Astra Mk2 is supposed to be. So I hope the IAF bites into this one quickly. Right now the MKI is a very good aircraft flying with a blunt weapon. That "I-Derby on MKI" circus will take years to happen. Rather start with a stopgap numbers of RVV-SD and then go for the K-77M in sufficient numbers, at least 500.
This is what I'm talking about
@Falcon. Any large fleet purchase should have a 10-15 year upgrade cycle. Even the Pakistanis are doing it with the JF-17. At least the army had the sense to buy the T-90MS.