I don't think the R-77 is superior to the SD-10 at all, in fact, its the other way around, at least for the Chinese developers. Of course they would be biased, but reasonably so, since they have access to R-77s for real testing. According to the developer of the PL-12/SD-10, the PL-12 is ahead of the AIM-120A/B, R-77, and MICA but behind that of the AIM-120C. In range there is no difference between the MKK and the MKI and I think the MKK has the advantage because its rear structure could hold slightly more fuel.
In terms of radar, the KLJ-4 should be superior to the N001 and various variants, about equal to the Zhuk-MSE, but behind that of BARS and IRBIS.