mebejoe I'm not sure why, but I find it more immersive.
It is exactly because it is much more inmersive. They are natural girls wearing real clothes, with natural bodies and natural make-up, no stupid false eyelashes.
They are always close to the camera, they look at you in the eyes, talk to you with natural and realistic dialogues (even if you don't understand them), they kiss you, caress you, hug you, smile at you... It is much more immersive and real.
In western VR porn everything is "Oh fuck, oh my god, fuck! Oh shit!".