The Apple headset is supposed to have dual 4K displays. It's true that you can't render an entire photorealistic world at 120Hz with low latency using a mobile-

The Apple headset is supposed to have dual 4K displays. It's true that you can't render an entire photorealistic world at 120Hz with low latency using a mobile-grade GPU, but there's still a lot you can do in VR and especially AR. Apple knows how to work within hardware limitations to give users a smooth experience. Like the first gen iPhone, which had perfect lag-free scrolling even if the actual content took many seconds to load.