User blog comment:TheAmazingBBP/BF4 Paracel Storm Screenshots/@comment-11823521-20130820220805

On you 6th screenshot, it's not a j20. The J20 has canards (small fixed or movable wings located in front of the main wings of an aircraft) and this one don't have it.

Moreover, we can see that the player is a Chinese soldier (see by the color of the army next the minimap and the soldier running is an US assault) and the aircraft appear to be an ennemy aircraft (spotted in red). I think that's more likely a F18 (and not a F22 due to the circleshape bireactor)

and on your 7th screen, the chopper is spotted as to be US.