Its not really saying that your lighting should change based on the darkness of your textures; rather, it is saying that in order for Unreal to light the scene in the best looking manner, you should try to keep your diffuse textures mostly to mid-range values and let the lighting do the rest. Right now your textures are…
hmm, that wasn't the spot I wanted it to link to... at this url: http://udn.epicgames.com/Three/Lightmass.html Go to the following section: Getting the best quality with Lightmass > Making lighting noticeable > Diffuse Maps
I like the lighting only shots, they have a lot of character but I feel like the cool lighting is being lost in the textures that are too dark possibly, try comparing the levels of your diffuse textures to what Epic has shown here in this article on lightmass. http://udn.epicgames.com/Three/Lightmass.html#Making lighting…