As you can see from the numbers above, Brilliant Color has a huge affect on the brightness of this projector. Most likely, if Brilliant Color is turned off, the brightness is even a bit lower than the 1 setting.
The thing is, Brilliant Color isn't just about brightness, it affects picture quality. In some ways it reminds me of those fancy "dynamic detail enhancement" solutions found on much more expensive projectors, but it's apparently not as smart. BC does take a serious toll on the naturalness of the image especially when at or near the maximum setting. That said, I'm talking purist/enthusiast perspective. To the less critical, a high Brilliant Color setting translates more to "more pop, more wow factor", rather than noticing that a skin tone isn't as natural. If you decide, after your first projector to really get into the quest for a great picture, you'll be looking for that much more accurate color, and more naturalness. For most first projector owners, though, this is fine, and you'll probably prefer Brilliant Color cranked up.
That said, back to Red - the movie. I watched a chunk of it with Brilliant Color set to 10, and then another 20 minutes or so, set to the default Brilliant Color setting for Cinema (6). Boy I preferred that lower setting. I noticed the drop off of brightness, but I didn't' need it.
I can definitely recommend that if you want a more natural image, especially faces, dial down the Brilliant Color, assuming you can afford the drop in brightness.
Brilliant Color provides all that extra brightness and pop, to help you cut through ambient light. In a more controlled situation, you don't need that extra pop, nor, the brightness, so why not enjoy a better picture. Check it out.
What I appreciated though was the faces were less contrasty, less likely to get blown out a bit on an very bright scene, such as a face in sunlight.
Remember, if you buy a HD131Xe, it's your projector. Watch it the way you enjoy it, rather than how you "are supposed to."