Krichy! Can't nothin' be simple?...
So the replacement filliment bulbage you can by at most dealers that claims a brighter headlight using 55w or 85w or some such, is only slightly brighter
but,
wait...his must be what you mean...
Left numbers (LM=Lumens) is brightness, Bottom (K=Kelvin) is the color Temperature
Notice the higher the Kelvin(K) the Brigtness(LM=Lumens) drops
so the 4200 white light kit looks like it puts out more light.
I guess I gotta find what the filly bulbs lumens is...
Sweet Jeezuz, show me the light....