From everything I've read, lumens claims are all over the map. Just like any advertising, manufacturers to tend to embellish when it suits them. From the reviews I've seen, the BD products have been pretty true to all the claims, so a back to back is the only real way to know for sure. I have a Stryker headlamp for Rallymoto night stages and it's amazing how much light the little LED throws out. I borrowed a Rigid light from a friend to mess around with and the light it put out was impressive.