This should be kept in mind:
PAF in Kargil : A PAF warrior speaks out Pak Tea House
The bottom line is, since Kargil it is evident that the clear BVR superiority of IAF is the biggest problem for PAF. Not that IAF has more fighters, or that they now have Flankers, but the simple fact that even good PAF pilots with F16 B15 were most likely shot down way before they can prove their skills in dog fights.
In todays warfare with BVR missiles, lower RCS, AWACS and soon even stealth capabilities, the skill of a pilot in engaging an opponent is less important that it was in the past. Today you try to detect an enemy before he can and shoot first, that has nothing to do with skill, but with technology.
That's why PAF is countering this disadvantage by upgrading and new procuring of real 4th gen fighters (F16s and JF 17). In numbers and even in capability they still can't match IAF, but at least the clear
superiority in BVR will be reduced.
Regarding PAFs defense capabilities, I said it in the Indian defense section often too, not the new F16s, or JF 17 will be a problem for IAF in this decade, but the induction of AWACS in PAF! This capability is way more important for the defense than trying to counter the MKI for example 1 on 1. If you can detect it before it can cross border, you can also send fighters to engage them and if you could even guide BVR missiles via data links, even SD 10 will be a problem, let alone AMRAAM.
Exactly the same problem that PAF has now against IAF, although they Bisons won't win a dogfight against PAFs F16s, in BVR with MKI, or AWACS guidance, they will be more than a problem for these superior fighters.
That's why I don't see any alternative for IAF than procuring fighters with very low RCS for the future like the Euro Canards (through MMRCA), or 5. gen fighters like Pak Fa. These will be detected sooner, or later too, but will give the superiority again back to IAF.
First sight, first shoot!
Just my 2 cents about this, btw for Indian members that report should be interesting too, because it is always good to see things from a different point of view!