The more foliage which can achieve photosynthesis the more it'll promote increased yield. I'd say quality is dependent firstly on genes, then care(water/nutes/medium/etc), 3rdly light. That is, I've seen many people do with less what it takes other to do with more, light-wise. HID and big pots of soil allows for minimal maintenance operation. You can basically just water & inspect them briefly and otherwise forget about them. I like the passion of CFL growers as they typically grow in smaller pots which require higher maintenance and more care. This requirement of greater care either makes or breaks the grower.
Light destroys THC... the less the better, the most useful is the whole idea.
Average the three results. There are none for 'white light'(RGB combined). HPS averaged 3rd place, and was most useful in the least useful spectrum. 2700k times 8 with reflectors averaged 2nd and the best in the best spectrum for flowering(reflector-less still beats HPS w/reflector). 6500k * 8 averaged 3rd as well, and best in veg, but worse than HPS for flowering.
That's the reason for no rankings on the top-left image. There's a light suited for each stage(veg vs flower). What matters most is the correct light for the correct stage. Avoiding the highest output in the least useful spectrum!