The Canon WUX-400 has a maximum resolution of WUXGA (1920x1200). That's over two times the resolution of the most common projector native resolution of XGA (1024x768).
A WUXGA (1920x1200) projector native resolution is actually the best resolution amongst all projectors of a similar spec and age to this data projector.
Amongst comparable types of projector the worst resolution is XGA (1024x768).
What does "projector native resolution" mean?