We don’t know if it is exact. I’d wager it’s not exact as in those early 2016 days pimax’s Oculus compatability was stronger on some titles using Sdk 0.6 - 0.8.
In the case of Batman vs Black Bat it seems for the most part they did indeed create 2 almost identicle “Bat Detectives” with slighr variences.
Oculus headset was at one time patched using Wine to plug into the Oculus Sdk to give linux support.
The simple truth without code or providing proof as iVRy did with NoloVR using his code. It is only a claim. Without proof it is simply an unconfirmed theory no proof to make it true or untrue.
Revive uses SteamVR & is intended to breach Closed minded FB; of which Oculus founder has shown he doesn’t support that & as a result injected support. Pimax does not use steam to run oculus programs. For example pimax has not had to patch programs like revive has or had the option to do.