I wanted to help contribute with some numbers from my A360X. I have 4 of them over my 48x24x21 aquarium. As you can see the water level is pretty high to the glass, the lights are exactly 6in above the surface of the water.
I tested in 3 lighting configurations. All 3 configurations had the color set to 40% (slightly on the bluer side from 50%).
Configuration A: Intensity 100%, Violet 20%, Red 10%, Green 10%
Configuration B: Intensity 100%, Violet 0%, Red 0%, Green 0%
Configuration C: Intensity 80%, Violet 0%, Red 0%, Green 0%
(photo is slightly cloudy, but measurements were when water was clear, and circulation pumps off)
Coral health in the photo is not indicative of the lights, as these corals have been through a lot recently in the rebuild. Personally I am very happy with the lights, they seem to provide enough power, but have a stunning look and very even distribution.
Let me know if there is any questions, hopefully this is helpful to others (I personally was curious about the intensity falloff as you move away from 100%, as well as how the other colors might impact intensity).