Weekender41
Ready to Learn
It's the quality of the light they put out.
The color temperature of the LED chips virtually all light manufacturers seem bent on using have exceptionally poor output spectrums (very heavy in the blue region, which our eyes do not process well).
As Bill mentioned, this creates glare in the foreground and the light simply peters out at any distance, doesn't matter what the lens/reflector pattern is.
If you want any kind of distance, stick with incandescent (halogen) or HID lamps (<4500°K).
Im looking now more at the rallye 4000 series halogen or the red ring HID ones. I like that large housing and easy to change bulbs or fix side to the hellas.