Isn't this the majority of modern air-to-air combat?
The point is that the idea of J-11As getting defeated in the BVR domain by Gripen C is not unexpected given how obsolete the technology on J-11A is relative to Gripen C.
Being defeated in the BVR domain by Gripen C is not an unreasonable state of affairs at all and if anything it should be expected simply due to how dependent on technology BVR combat is. You can have the best pilot in the world, but if they are piloting an aircraft with massively inferior technology then they will be defeated in BVR by pilots flying aircraft with superior BVR technology.
If the J-11As really did perform much better in the WVR domain (which is less dependent on technology than BVR at least for the generation of aircraft that J-11A and Gripen C were part of) then that would also reflect well on the J-11A pilot's abilities.