The first photo is obiously photo shopped. There is no doubt that is a US Raptor. The Bottom fighter looks alot like the one I posted. holly cow it looks just like it!
How do you know J-XX will not be able to supercruise? It might just have that ability once they field it. If I'm not mistaken China's domestic jet engine program is coming along. WS-10 has been certified. I don't see how you can predict that it won't supercruise at this point. Unless they have stated that they won;t seek that as a design consideration. And I haven't heard that when searching info on J-XX program.
Or this one
Isn't this a F-35 !!!???!!! ... are You sure it's a Chinese ???
Deino
That's definately an F-35 wind tunnel scale model
See this: