@HappyCamper which particular lights are you comparing the timber to?
I think everyone else will agree, wall watts and ppfd mean way more than any garbage claims you’re use to seeing. Wall watts mean exactly what they are. Not 1000 watts but it only draws 200 watts from the wall. And ppfd or photosynthetic photon Flux density, is the measure of actual photons provided that are within the usable spectrum for your plant.
By using this or any of the lights @MAXHeadRoom or I suggested, you are stepping up to a different level of light than you’re use to seeing come up on an amazon search. These are real useful numbers, not make believe pipe dream stuff that you have to thumb through the description and are lucky to get.
If you have some specific lights you want to compare, I’d be happy to try and do that.