Spectrum output is just what spectrums they claim it outputs at. That is my point, you get lots of marketing material with spectrum graphs that show you what the light is supposed to output in terms of wavelength and yet no hard proof through an industry standard test benchmark. Brs providing settings is only giving you the ideal settings for that light, not providing proof that the light is actually outputting a specific wavelength the manufacturer is claiming it to.
Cri might not be exactly the correct benchmark for this industry but probably is. Cri is telling you how faithful a light source is at rendering any color within the visible spectrum, using true daylight from the sun as the control light source. So a led light that has a 99 cri is capable of rendering colors at nearly perfect accuracy compared to the same colors under sunlight, while another light that has a cri of 85 is kinda poor at reproducing colors accurately and anything lit by it just looks muddy and strangely tinted.
What you end up seeing in film led lighting fixtures is the high end super expensive fixtures have really high cri ratings because the cost of producing LEDs that are that accurate is not cheap, but then you could also go get a similar led fixture that is dirt cheap made under some random brand in China and it is cheap because the cri of those LEDs is horrible.
I say this benchmark might not be ideal for sw lighting because you guys don't really care about faithful reproduction of colors under true sunlight, but prefer very specific targeted spectrums within visible and non visible ranges. But there should still be some testing done to confirm that when red sea, radion, etc.. say their lights spectrum includes specific wavelengths that they actually do hit those wavelengths. This matters because to any of us, we see it as accurate because our eyes and brains can't determine color accuracy on that level in the same way and for the same reasons we also can't tell par just from looking. But your corals sure can tell because they need those specific wavelengths for energy.
en.wikipedia.org