The highest resolution supported by the Benq MX722 is 1600 x 1200 (UXGA). That's over six times the resolution of a 640 x 480 (VGA) projector, which is the most common resolution supported by data projectors of a similar age and type to the MX722. 640 x 480 (VGA) is also supported by this data projector. This multimedia projector also supports a supported graphics resolutions of 1024 x 768 (XGA).
A 1600 x 1200 (UXGA) supported graphics resolutions is in fact the best supported resolution amongst all similar spec multimedia projectors that came out around the same time as the MX722.
Amongst comparable types of projector the worst supported resolution is 640 x 480 (VGA).