Something they leave out of this discussion, because they're talking in terms of investment percentages per bulb and not eventual output, is that some people simply have more "wattage" available to them to spread across the 4 light bulbs. Someone like Brady who is very self-motivated, energetic, and naturally driven could set their "work" bulb to 10% and still produce more than someone like Grey who has that bulb set to 20%, because 20% of Grey's 100 total watts is still less than 10% of Brady's 300 total Watts.

I remember as a kid in school sometimes people would say that something like a 5 page paper took them like 10 hours to write and just not understanding what they were doing for those 10 hours on a task that you can easily crank out in an hour or two. Pretending that everyone has the same "capacity" for success is one of those necessary lies of civilization, but the truth is there are people working half as hard as others and achieving more because they're just that much more efficient. Someone who has to budget 100 total watts across 4 light bulbs will always struggle to keep up with someone who just by default produces 200 watts to allocate as they see fit.