Originally Posted by
noglider
These ratings are just ratings, not actual outputs. The hub puts out more than the rated output above a certain speed. And the lights probably go to full brightness before reaching the rated required power. That's why using a 2.4w hub won't be noticeably different.
Yeah most LED headlights don't use anywhere near the full 2.4W budget, they burn it off with a resistor. It's an artificial limitation to make room in the market for brighter and more expensive models, which I think is another thing that needs cracking down on.