There are vast discussions in CPF archives explaining why a incandent light throws better than a LED light. I don't remember the exact threads name but if you do a search you will come up with sensible results.
I'll try to summarise it here.
The size of the source of illumination, which can be made smaller with an incandescent source, has nothing to do with the "throw" when this light is focused into a beam. You can easily compensate the bigger "point source" with a bigger reflector or a dedicated optics.
The reasons for the better throw of an incandescent light are twofold, both related to the spectral composition of the light emitted from the LED source.
The typical white LED is a blue led die covered with yellow phophors. The phospors absorb part of the blue light emitted by the LED die (made with an InGaN semiconductor junction), and re-emit it of a yellow-green colour.
In the LED, the blue and the yellow-green colours "beats" togheter and, in accordance with the Fourier principle, the resulting colours "beats" between them, and so ad libitum.
Theoretically, white light should emerge from the LED.
In reality, the white light emitted from the LED has many spectral "holes", and the various colour components are not evenly spaced along the white spectrum; in any case, there is a blue dominant spectrum line, produced from the initial source (the LED die).
By contrast, the frequency components of the light emitted from an incandescent source are evenly spaced along the white spectrum, and there is no blue dominant frequency - but an infrared one, which is invisible and ininfluent.
As I said before, the reasons for the lack of throw of the LED are two, both tied to the spectral composition of the white LED light.
The first reason is because of the blue dominant line. The light of the sun is white but the sky is blue: this happens because the air of the atmosphere scatters the blue light but not the red light; because the blue light contains - from a quantum point of view - more energy; thus, when a blue quantum enters an atom of air, it re-emerge at far distance, while a red quantum is unschated.
The bluish light emitted from the LED scatters much more easily than the light emitted from an incandescent source of light.
For the second reason of the lack of throw of a LED light, the explanation is evolutionary.
The human eye has light receptors for the three fundamental colors: the red, the green and the blue. The human brain reconstitutes an image based on the information provided from these receptors. These information are compared with already known patterns in the brain; some patterns are "pre-wired", some are learnt from experience.
These patterns are based on the even spectral distribution of the illuminating source, like the Sun or a fire. Evidently our predecessors had sunlight and flaming torches, and a filament bulb resembles accurately the spectral distribution of these natural sources of light.
A white LED light, of the same intensity of an incandescent source, makes difficult for the eye-brain system to discerne the details on an unknown object. This is the additional cause for the apparent lack of throw of a LED light, where the illuminated targed appears "washed out". This effect is more evident outdoors, where the unknown details of an image are more numerous. It is possible to overcome this problem with more LED light power.
Hope this helps
Anthony