The NEC PA522 has a maximum resolution of WUXGA (1920x1200). That's over two times the resolution of a WXGA (1280x800) projector, which is the most common resolution.
This projector's resolution (WUXGA (1920x1200)) is in fact the best resolution amongst all 5000:1 contrast ratio projectors that have been available for a comparable time to this data projector.
Amongst comparable types of projector the worst resolution is XGA (1024x768).
What does "projector native resolution" mean?