Why is that you and most of your fellow countrymen Jinglos still stubbornly persist to dwell in cuckoo-land. Who is the expert or the mentor guiding you all this BS, For your sake take this.
Upgraded to block 50/52 standards means the standards laid by the OEM for the export variants and does not necessary includes all the equipments/weapons possessed by the country's own forces. E.g F16 latest block 50/52 don't possess programmable DRFM. Now comparing with the US F-16 even with older block does not means that they are more advance and have the cutting edge tech which the US possess like Active Jamming, sensors etc which they have according to their needs.
AIM 120 C5 which is supplied for PAF have less range in other word inferior than R-77 and does not have the superior range, top attack profile like AIM 120C7. Actually all the stuffs like what your mentors are telling you like RCS, BVR range etc are all the marketing terms. No body (Airforce, OEM manufacurer) reviels it in the public domains.
Regarding the friendly exercise of the jets are meant to practice the tactics and have no meaning, e.g MKI will not use its BARS which is the main power behind it and keep the radar in training mode for sec racy.
You mind find interested in some of the Super Sukhoi Upgradation plans starting from 2017 in my previous posts.
thanx and regards and think factually