I've often said that the claims of many LED manufacturers that a smaller light is equal to a much larger HID is nothing more than myth and marketing. So far, every grow, using every LED light, that I've seen backs that up. 60% is too high, after mid-flower, imo.
Disclaimer: I still use HID and I'm NOT an LED expert. All of my LED knowledge is from other parties or research so I can't say from first hand experience one way or another. I also run a medical grow consulting business in SoCal.