OK, the LS-5 is far from the brightest projector out there in its brightest mode. In fact it only gets up around 800 lumens, while we consider an average bright mode to be 1000.
On the other side, its colors and overall picture look better in "brightest" mode than most projectors can do in "best" mode.
The LS-5 is not a projector for the family room, and sports and HDTV is a good reason why. It's not designed to tackle any really siginficant intentional ambient light. This puts the LightStyle LS-5 projector in line with a variety of projectors in that $4K to $12K price range, including the all the Sony and JVC models.
In a dedicated theater, like mine, though, not a problem. My theater with its dark everything has lots of down facing lighting in the back, and I can have a party going on, with plenty of light to see each other in the back half of the room, while sports still looks great.