The presentaion of the WD-92840 is pretty well staged.
There is a fair amount of black shrouding aroud the display and even the ceiling of the display area is black.
That suggests to me that reflections could be a problem in many real rooms. Judging this thing without seeing it in the wild is probably not going to give one a realistic idea of its true performance.
Mits WD-92840 92" DLP - Lumagen Radiance XS, Martin Logan Motion 40s, Ascend Sierra 2s
Older 58" Panny Plasma -DVDO DUO, JBL Studio 530
Pioneer AJs, PSB Images, Usher S520, JBL HLS-610, Definitive SM45, MusicHall Marimba