The limit with conventional Bilux bulbs is on most scooters a headlight bulb with 45/45W. The ignitions, which usually produce 80 W to max. 120 W, do not give more. The luminosity measured in lumens is less than 400.
The LED headlight has three times the luminosity (1300 lumens). The power consumption is only 20 W. This corresponds to the luminous efficiency of a conventional 100 Watt headlight.
This means that a considerably better illumination can be achieved with a given generator/power supply. In addition, more capacity remains for other consumers.