The highest resolution of the Acer X1 is SVGA (800x600). That's 53% less resolution than the most frequently found native projector resolution of WXGA (1280x800).
This data projector's resolution (SVGA (800x600)) is in fact the worst resolution across all projectors of a similar type and age to the X1.
A 1080p (1920x1080) native projector resolution is the best resolution across comparable types of data projector.
Multimedia projectors with a higher resolution that might be worth looking at include the Acer X1240 (£335.71) (XGA (1024x768)) which also has a higher rating.