The “Transflective” I meant in the original post was like this:
So, in bright sunlight it is in “reflective” mode, but then indoors it then has a backlight and works like normal screens, “transmissive” mode, where a backlight is used. The “transmissive” mode would be what the NITS value applies to. It would not effect it in “reflective” mode.
A good comparison of the screens types is here:
http://infracanis.com/yggdrasil/Articles/gear/garmin550/vsphone.html
The “direct sunlight” example demonstrates is nicely.