The Quest has a resolution of 1440 × 1600 per eye. So the 50% more pixels works out to 20% more scan lines (1920) and 27% more pixels/line (1832). 90 Hz has potential perhaps via PC link.
Don't forget it's an RGB display with 3 subpixels per pixel. Quest 1 was 2 subpixels per pixel (pentile). You'll definitely see much more of an improvement than 27%. Pentile is not bad when the pixels are so small you can't see them. Under a magnifying glass which a VR headset basically is, not so much.
I think where pentile went wrong was prioritizing green/red. I believe red has the lowest spatial resolution and should have prioritized green/blue instead. When using Night Shift I notice a definite subjective reduction in spatial resolution.