The highest resolution of the Hitachi CP-AW252 is WXGA (1280x800). That's 30% more resolution than a XGA (1024x768) projector, which is the most frequently found resolution.
A WXGA (1280x800) native projector resolution is in fact the best resolution amongst all 4000:1 contrast ratio projectors that have been available for a comparable time to the CP-AW252.
An XGA (1024x768) native projector resolution is the worst resolution across similar types of projector.
We think you might also be interested in some of the alternative data projectors that have a resolution of WXGA (1280x800) currently available including because of it's better review score, the NEC P401.