Importance of 460nm red LEDs?

[RackitMan]

http://www.hidhut.com/catalog/images/600HPS%20Lamp.jpg

I see TONS of 660 there for HPS. In fact there are almost NO lamps (besides monochromatic ones) that do NOT have 660 emissions of some sort.

Seems people here are totally missing my point:

The watt per watt LED grow match the HPS grow with 80% deep red and no yellow while the HPS has 80% yellow/orange and only maybe 5% deep red.

The current science tells us HPS should be an epic fail in comparison - and yet it doesn't.

Is no one else truly curious? Methinks there is something critical here that we are overlooking that could help in future LED designs.