Air warfare between two adversaries includes various factors not only fighter planes. Its the AWACS, Data accusation and processing speed and efficiency, enemy location and its information about their radars, frequency range, SAM factor and high level of planning that matter also. Its not just a plane you purchase and wins all the war. Each airforce develops their own tactics and form their own doctrine developed in years for a specific enemy. The plans are studied and analyzed in hypothetical war by the experts for years and this is a continuation process. Any new plane induction needs these doctrine to be updated and reviewed that can takes years.
Air fight between two planes will involved other planes, ground radars, sam, and awacs too and very less chances they are not that should also be taken into consider before before coming to any conclusion or result. Long range BVR does not guarantee your victory or dominance and why people here thinking that planes are going to fly head to head to each other and not from sides or from back. The official RCS of the fighter plane is from the front and without weapon load and what about from sides and with external weapons and drop tank. If the Awaacs are excluded and DOGFIGHT a pair of fighter plane are put together than the 360 degree coverage offbore sight, high maneuvor lock-on after launch missile like Python 5 would be real threat not any over rated BVR. BVR is much suited for big airsuperiority fighter like su30 mki which can fire the barage of BVR's from long distance taking advantage of its long range and powerful radar and would not confort into any dogfight.
MKI is an Air Superiority Fighter so no need for low RCS, check F-15 it fights open with shear power power and there is no need to sneak near the enemy target to get its shot hope you got that point. It can also work as the command center but providing the radar input via secure data link to other supportive fighter plane say Mig29SMT which will keep their radar off and only turn on passive inputs and try to close the gap between the enemy plane. Now you are naming AIM 120c5 and PL12 which the F16 or JF17 would try to target the MKI which will maintain its safe distance. The powerful radar can also used to reduce the enemy radar coverage ESW warfare.
Ok another way suppose 20 MKI files toward say Lahore, the Paf will have to scramble its say 20 F-16. But MKI don't attack but wait till F-16 burns due to its massive fuel capacity. F-16 have to eventually land for refuelling and you know very well its more advantageous to distroy the enemy fighter plane on the ground than in air. MKI purpose is fulfilled because than the work of Jaguar and mig27 will start which are dedicated ground attack fighter and first will be used for SEAD and DEAD operation to target SAM Sites. Optionally MKI can used Brahmos thats why Brahmos NG which MKI can carry 3 in nos. Paf have to take risk to attack Indian air bases due very strong SAM network.
Hope you understand my points which I have to complete in few words.