I am european, but If 95% of VR porn I watch is JAV porn, it is because I don't like how western companies film porn (european, USA companies).
It has no passion, it is rude, it is too direct "come here, let's fuck"... and the cameras are too far away. When I watch a Western VR porn the girls are two meters away, it its like watching a standard film on a big screen. That is not virtual reality. It is standard porn in first person perspective.
JAV VR porn is much more intimate, personal, private. The girls are polite, affectionate, warm. And they are closer to the camera, you feel they are there with you, I don't feel it with western VR porn. Jav is real virtual reality, western VR is just standard porn on a big screen.
JAV companies don't need any advices from western filmakers, thanks. The same companies that promote big disgusting fake tits, nasty piercings and ugly tatoos...
JAV VR porn is unique and wonderful, I hope western companies don't contaminate it.
And for the quality of the films, I use Samsung Odyssey Plus so I need 4K films or more, with more bitrate, I agree with you on that.. But I have 4K JAV films that look better than 6K western films I have from VR Bangers and others... Western VR films look better overall, it is true, but It doesn't mean you need to change the position of the camera or how japanese filmakers work. You only need to add more resolution and more bitrate, or fix technical problems. Not to change JAV VR porn.