Thanks for the translation; I guess another clue that favors the complement theory is the rumor that the J-36 will have side-by-side cockpits (i.e. definitely a strike aircraft rather than air superiority fighter). Is this individual credible or privy to information that the general public isn't?
A side-by-side cockpit layout shouldn't influence the role of the J-36
Existing air superiority aircraft are single pilot or tandem layouts, because it's the optimal aerodynamic shape for a smaller aircraft, and the aircraft itself was what achieved air superiority.
But if you have a J-36 which has 50% more engine thrust (because it has 3 engines instead of 2) and a 50% greater weight - then it is still the same thrust-weight ratio. But because it is a bigger airframe in all directions and the optimal airframe shape is now a wide "pretzel" for broadband stealth, there is enough space for a side-by-side layout which is more efficient because:
1. Instrumentation and controls can be shared in the cockpit. That matters because you want a huge screen in the middle to control drones, and you want both pilots to have the best situational awareness
2. The pilots can communicate better
3. The pilots can alternate rest periods during long missions, as each can take complete control of the aircraft
4. Also remember that air superiority will be much more about the accompanying CCAs battling it out as drone swarms, rather than the aircraft itself
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My guess is that the Shenyang aircraft will also be a side-by-side layout, but we'll have to wait and see.