Just to stir the pot, here's my instrument panel with Superbrights ($1.49 ea.) installed.
IMHO, I think all pictures can be deceiving unless they show, in one picture, a side by side comparison of one solution vs. another, as even a relatively dim light output can be made to look good and bright just by forcing long shutter speeds, more exposure compensation, etc.
I really can't say that these LED's put out more light than the original incandescent ones, but they certainly provide more contrast and are thus more readable.