Yes, And No...
What I'm stating is that it is about equal. The higher wattage is to compensate for a loss of brightness from the coating on the bulb. It is about the same brightness, just whiter, and different. When I changed over a vehicle to these recently, I had to take time to get used to the color change in the headlights. I also had to re-aim my headlamps, but that was on my minivan...
The color frequency, or "temperature" of the lamp more closely approximates sunlight than Halogen does, so you will hardly see them during daylight hours, even when it's cloudy and raining. You also won't see as well in areas that have mercury-vapor lamps and other brightly lit city street lighting. But you will see more dramatic of a difference on dark country roads.
"We drive into the future using only our rearview mirror."
- Marshall McLuhan -
Northern California Wine Country...
"Turbos whistle, grapes wine..."