Chinese developed J11 and Su-35

Since a lot of breakthroughs are being made in China these days in all the areas of aviation i.e. avionics, engines, composite construction etc.

How then a totally Indigenized J11 will compare with modern versions of Su-27 coming from Russia itself e.g. Su-35. It would appear that Russian version may have an edge in engine department and Chinese in avionics area.