Led Lumens Per Watt Can I Have Lumen's/watt Comparison Of LED Lights With CFL & How About Lumens Requirement In Cubic Feet Terms?

Can i have lumen's/watt comparison of LED lights with CFL & how about lumens requirement in cubic feet terms? - led lumens per watt

The following website explains the different methods of measuring light levels. For rooms, the light is usually measured in lux or lumens per square meter. It is usually measured in cubic measures.
LED lights are more than 80% efficiency. Take a look at the second site below.
Incandescent lamps are about 2% efficiency. Not many.
Are better than compact fluorescent bulbs, but only 7% to 8% efficiency. See below for third place.