The Epson EB-G6650WU supports a maximum resolution of 1920 x 1200 (WUXGA). That's over seven times the resolution of the most frequently found supported graphics resolutions of 640 x 480 (VGA). In addition, this projector supports a supported graphics resolutions of 1920 x 1080 (HD 1080).
A 1920 x 1200 (WUXGA) supported graphics resolutions is in fact the best supported resolution across all data projectors of this spec and age.
The worst supported resolution amongst comparable types of projector is 640 x 480 (VGA).