I thought the Nikon would be so much brighter with the 42 vs 40 mm objective lens and its a Nikon. The artificial light in a modern store in photo terms is about 5000K vs evening light 5500-6000K if I remember correctly so its apples to apples and the Burris was so much brighter. I think many just assume the Nikon is better never having held them side by side. The o rings are better and the clicks are more pronounced according to some on the Burris. I haven't tested that. The guy in the store seemed shocked he is a Nikon guy.