It is not a question of who is on top, but who is next to who. When shooting in very low light at multiple targets, you have to make fast small adjustments to get the dot on dot view. Maybe its just me, but I can make the small adjustment faster if the dots are of different color. I have tried both. Must be my visual cortex needs a crutch. I hate the three dot system. It takes me longer to figure out what dot goes were.