I need to emphasise that this is dramatically different. Comparing the first clip of OoT to [1], I see:
- Higher framerate
- Real-time lighting
- Real-time shadows
- Higher render resolution
- Water ripples/splashes (unsure about these being new)
- Widescreen, motion blur, etc.
If your contention is "they're not an improvement on the graphics, just changes", then we can agree to disagree, but they're otherwise incredibly noticeable!