The Chinese design appears to be largely built around the stealth shaping design rules employed in the F-22A Raptor. The chined nose section and canopy are close in appearance to the F-22. The trapezoidal inlets are closest to the F-22, but employ an F-35 style boundary layer control design. The wing fuselage join angle, critical for side aspect stealth, is very similar to the F-22 and superior to the Russian T-50 PAK-FA prototypes and the F-35 Joint Strike Fighter. The flat lower fuselage is optimal for all aspect wideband stealth.
Finally some one agrees with me that J-20 design takes more from F-22 then any Mig design , Thanks Carlos
IMO the reason why they have those Canards ( not stealth friendly ) is because they understand the canard design very well via J-10 experience and until they get a 3 D/2D reliable TVC engine they will keep the canard , after all Eurofighter has canard delta configuration and can do well in subsonic and supersonic regimes of flight as we are told.
The aft fuselage, tailboom, strakes and nozzles are not compatible with high stealth performance, but may only be stop gap measures to expedite flight testing of a prototype.
Agreed right now they need to worry more on validating this new aerodynamic design than some stealth aspect , after all what is the use of stealth if you end up with subpar aerodynamic performance or worst some fundamental design problem.
Much like PAK-FA the J-20 will have couple of prototypes validating its aerodynamic/FBW/systems performance.
The airframe configuration and aft fuselage would be compatible with an F-22 style 2D TVC nozzle design, or a non-TVC rectangular nozzle designed for controlled infrared emission and radio-frequency stealth.
Ejactly if you remove those strakes and replace those round nozzle with a Flat 2D nozzle and just remove the canards this will look like a beefy F-22 , Raptor-chi-lee-ski
Now what CIA has to do is to find out if there is any Chinese mole in the F-22 design team that helped them siphon off the design ... W-88 redux