pretty sure watts isn't everything, spectrum means a lot. not sure if they correlate completely but I assume not because different types of light (HUD,LED) give different spectrum on same watts I think. as between brands that may both be LED , if they are not the exact same light than spectrum may differ from company to company on same watt LEDs. But if they are the exact same light it is probably got a dial to turn up the intensity. so look for the dial and put it to 100% if it not.