The highest resolution of the EB Z9870U is WUXGA (1920x1200). That's over two times the resolution of the most frequently found projector native resolution of XGA (1024x768).
A WUXGA (1920x1200) projector native resolution is actually the best resolution amongst all data projectors that came out around the same time as this multimedia projector.
The worst resolution across similar types of projector is SVGA (800x600).
What does "projector native resolution" mean?