SinoSoldier
Colonel
tremendously more powerful engines? what engine is that? WS-10 on the J-11B produces 125 kN of thrusts compared to the 122 kN of the basic AL-31F (don't get confused with the original 132 kN value). In contrast the AL-41F1A of the Su-35 produces 142 kN of max thrust. Not to mention the 3D TVC. Su-35 also has at least 2 extra hardpoints. Su-35 empty weight has not been officially disclosed so cannot say anything about weight reduction.
You are referring to the base WS-10, which did not enter service with the military. The "A" variant, used by the J11B and J15, produces 132 kN of thrust.
---------- Post added at 04:02 PM ---------- Previous post was at 03:57 PM ----------
J-11B is just an updated Flanker, because the original Su-27 was really outdated,
think of it as a Chinese SKM upgrade equivalent
combined with their large size, those birds are probably more useful for pilot training/hours than anything else
some people really think the J-11B is on par with the Su-35
personally i don't think so, or to be fair we don't know for sure
the only aspect where J-11B can be superior is perhaps AESA radar and the proof for that is highly questionable (a single brochure)
which is ironical, because again the original Su-27 Chinese get was terribly bad at that
can the J-10 beat the old Flankers, no doubt bout that
The Su35 is an updated Flanker as well. The upgrades themselves define the differences between the J11B and other Flankers. The J11B is pretty much a Chinese answer to the Su35, with similar upgrades to its fuselage, avionics, powerplant, and weaponry. Both planes feature phased array radar, radar absorbent material, composites, upgraded engines, and while not all of these are done to the same extent, the planes would be generally in the same league.