Should be common knowledge amongst forum members that the primary advantage that J-10C possess over the Rafale is a bigger, more capable, AESA that is at least a full generation ahead (likely utilizing GaN as opposed to GaAs). SPECTRE was likely very good when it first debut, but I doubt when it was designed to handle the threat of BVRAAMs with AESA seekers and midcourse guidance. All other things being equal, in a true systems on systems engagement with proper AWACs support and tactical proficiency on both sides, I don't forsee major differences in performance between the J-10C and Rafale (exchange ratio approaching 1:1).