lmao,j10 is literally bigger in size than rafale.....With the J-10C's airframe size limitations, there is no way it could outclass the Rafale in every single aspect, no matter how much you upgrade it. However, the J-10C could use a bit of extra teething, including the addition of wingtip pylons, further incorporation of composite materials for the airframe, a WS-10B-3 TVC engine, more dual-ejector racks, and general incremental avionics updates.
They really out to maximize the J-10's airframe, given its size limitations.