In general projector and reflector light bulbs if LED emit the same volume of lumens of light. The projectors concentrate that light very narrowly to basically horizontally illuminate the lane of travel in front of the car with a strict vertical cut off. The reflectors disperse that light much wider horizontally to illuminate the on coming lanes and the shoulders of the road. The reflectors have no vertical cut off shutter so they illuminate road signs and objects much higher off the ground than the projectors. I think the reflectors are better for rural areas where a deer might jump out of the shadows from the shoulders of the road.