You know.. I thought I wouldn't respond to you ... but then I see posts like these on multiple threads .. and I usually hold back when it comes to brethren but I guess we have to make an exception in your case ...
If China were to arm JH-7's with BVR's and nothing but BVR's -- by your logic it would become the best aircraft in the subcontinent .... atleast in BVR combat ..
BVR arena isn't as simple as that .. I've been following debates surrounding BVR's from the days where discussions were held around the topics of PAF forcing the IAF in to WVR, because we didn't have any "declared" BVR capability at the time .. then there were many rumors of the weapons that are declared stand off A2G weapons ... were actually BVR A2A weapons .. that Pakistan had somehow reverse engineered .... until the AMRAAM deal with the blk-52's was signed and then we had SD-10 with JFT's ...
When your talking about BVR, first off you have to know where your opponent is and then get a lock and fire ... so first step is detection /tracking and then lock and fire ... the factor that you brush off all the time i.e RCS is the basic dictator of when an aircraft is going to be detected along with the radar that you field ... as far as the general calculations go .. SU-30 MKI's will see F-16's / JFT's around the same range as the F-16's/JFT's will detect/track the MKI's .. then it comes down to your weapons .. carrying capability matters but then again .. what type of weapon you have matters a heck of a lot more ... With Aim-120 C5 and SD-10 A, we have very credible BVR weaponry .. you can go about and see senior members and professionals and usually when the discussion is whats the best BVR pound for pound in the subcontinent ... the usual inclination is towards the AMRAAM, and by whats already in the public domain ... SD-10 A isn't far behind and it already has another version coming out soon enough ... the last thing you have to have is .. how much time will the BVR fight even last -- you have two aircrafts that detect each other at 120 odd Km's and fire at 40 Km range to maximize the capability of their weapons ... if both the weapons fail ... what will be the time frame in which they get in to WVR ... mere seconds if you know a little of relative velocity -- though we learned it back in the good old days where you had matric and not these goody toshoo O levels stuff ...
So what happens to a a bigger aircraft, that is granted ... more maneuverable --- but you have on the other hand aircrafts that are alot easier to fly in the hands of an airforce ... whose breakfast, lunch and dinner is about WVR ... because we didn't really have anything to work with back 5-7 years ... hence the extra focus on WVR and the results show .. when the likes of F-22 pilots from USAF are out parsing the PAF pilots on how good and battle hardened they are (we were using PG's in those exercises (indus viper I think) .. that is correct the freakin F-7 PG!!!) ---so you can figure out the rest by yourself ...
There is a huge list of cognitive biases ... which includes something called "anchoring bias" in which a person usually values a piece of information alot more then the "whole picture" --
so I urge you to see the whole picture and maybe look around and see a couple discussions from senior members around the topic ... You can find alot on the information pool thread of JF-17, the exercises thread, the thread on F-16 and the JF-17 multi role thread ...