The Epson EB-S18 has a maximum resolution of SVGA (800x600). That's 53% less resolution than the most common projector native resolution of WXGA (1280x800).
A SVGA (800x600) projector native resolution is actually the worst resolution across all 10000:1 contrast ratio projectors that were released around the same time as this multimedia projector.
Across similar types of data projector the best resolution is WUXGA (1920x1200).
What does "projector native resolution" mean?