At the end of the day it was a spectrum test hybrid used far less power with hlg to make it somewhat fair. Apparently white spectrum is better. It would be cool to see a side by side for the actual fixtures instead of a spectrum side by side but that probably won't happen
I can see where you might have come to this conclusion and I agree that white light does produce great results, the question is which white light the is best or most versatile spectrum for growing, maybe several types white light overlapping would enhance these bands of light and provide more efficiency than one on its own? Maybe I'm overlooking the nanotechnology that is built into each diode, is it possible that white light has nano rgb like technology built into the individual diodes in order to produce white light?
Also with what we know about spectrum wavelengths, we should begin to realize that one fixture should not hold all of the diodes in one fixed height mounted to a single panel, red light travels in longer wavelengths, where as violet-blue light travels in more rapidly and shorter wavelengths than other light. The leaves of a plant can only handle so much energy at one time, by mounting all these diodes to one board we are providing the plant with imbalanced over saturation of light on some ends of the spectrum, while under saturation is occurring on the other end.
We cannot bend around the what the science behind this matter is indicating, and as an example look at HGL for instance, they have attempted to mount RBG to one board and have added less of certain diodes in order to achieve a similar result as having some of the lights further distance , while others are kept closer, but we cannot bend around science, a light sources spectrum wavelength doesn't change just because you added less diodes, the leaves are still receiving spectral interference of photon absorbsion because it is dealing with radiation from the other diodes because the wavelengths they are producing is overwhelming what the cells of the plant are able to handle, and therefore minor shock is being endured by the plant for the duration of the grow, and full spectrum optimization is not reached.
Wavelengths of light deserve our respect and understanding in order to utilise them appropriately, Red light travels at a slower vibration that is less radioactive than Blue light, therefore Blue light needs to be spaced further away from the plant, while Red diodes can be kept closer, you see the very best way to utilise RBG light is to run at different distances and control the wattage to individual color diodes separately in order to dim down some of the intensity while others can be ran at higher wattage due to producing less radioactive light (That is unless enough space is provided for each light source, then a dimmer may not be necessary).
When we combine this knowledge to our other understandings of what the plant needs during its life phases, in regards to spectrum, this can really benefit our ability to grow larger and healthier plants, because we are paying attention to the necessities of the plants needs at a cellular level, not just with soil, nutrients, and other elements, but with the lights we use and the way they are utilized as well.
Cheers.