Nice, so for others who can't tell, the helmets in the first post quoted are the J-20 HMD, and the helmets in the second post quoted are the J-16 HMD.
Note that the images of the J-16 HMD clearly show a single projector over the right eye so it is a monocular HMD. We've seen that before as well, but this is just further clear confirmation.
We cannot clearly see whether the J-20 HMD is monocular or binocular, but from past info display on it, it should be binocular.
J-20 HMD
J-16 HMD
Edit:
Lol, nvm, this screen cap confirms J-20 HMD is indeed binocular.