This thread is very puzzling. All lights are measured in lumens, which is a standard unit measuring light output. Unless I am missing something, a 50 lumen light bulb produces the same amount of light whether it is incandescent, CFL, or LED. The differences between the bulbs has to do with the color spectrum of the light produced, and the amount of electricity consumed, not the number of lumens.
The directionality of a fixture has to do with the shape of the housing, and only slightly with the physical properties of the bulb, unless you purchase a special bulb with a built in directional housing. So my ceiling cans use a PAR 30 light, which contains a specific housing shape, that directs the light downward in a specific pattern. The lights also require a 50 watt equivalent bulb, which simply means a bulb that puts out the light equivalent of a 50 watt incandescent fixture. If I put in CFL lights, I need about 15 watts to produce 50 watt incandescent equivalent. If I use an LED, I need perhaps 8 watts. Same amount of light, same pattern.
So I am confused about why your lighting consultant would say that the light from an LED would not reach the floor. The only way this would make sense is if you need a special bulb with a built in housing, and that style of bulb is not available in LED format.