The close match to sunlight (ASDM) enables plants, insects and mites to obtain photons of a wide range of nanometers incl. some UV radiation.
More constant and comparable conditions in darker months or controlled environments with results obtained outdoor, under outdoor field conditions.
The blue:green (B:G) and red:far-red (R:FR) ratios adapted to clear sky conditions during spring and summer to fit almost all plant species on earth.