60 lm/W is very low these days. Commercially available screw-base A21 bulbs like Cree's "100W replacement daylight" (17,000 lumens at 15W) are up over 110 lm/W. You can get that for $14 at Home Depot.
It depends on the quality of the LED and what it's designed for. Some deliver better spectrum response for plants and for different parts of their life-cycle. Vegetative and flowering stages may require slightly different optimal amounts of energy at particular wavelengths but it's not strictly necessary. A good LED lamp designed for growing should be more than adequate, then tend to have fill-ins for the wavelengths needed.