I just ran a 2.5-10x42 NF through my night-time optics chart test, and it rated a 7+. No scopes have ever rated higher than 8, and scopes with illuminated reticles tend to to be slightly (emphasis on slightly) less bright due to limiting factors in the system.
On the other hand, I've always found the reticle itself to be more important in dim-light aiming than tiny differences in optical brightness. And 7+ is a much brighter than average view.
