Yeah, that site is a bit 'wow', but...
Despite the site owner's apparent photo-electronic expertise, he's also obviously a bit lazy...
Witness the obviously cut & pasted repetitive/redundant comments from review to review, and...
... out of three (count'em, 3) bicycle LED light reviews,
he never reviews any of the most important (to cyclists, and you know what they are) LED lights.
He reviews (using his electric wheelchair*, indoors) the Wallyworld version of Tireflys... and rather ineptly, at that.
I use Tirefly PROs on my valvestems and on my pedals... they add greatly to my nighttime commute visibility.
The LED Museum is a good source of general LED information, but don't trust his reviews**.
ETA:
klenq, thanks for the link, anyway!
*
I am NOT disparaging wheelchair users! I'm disparaging a lazy reviewer. OK? Doesn't he know anybody with a bike?
**
Unless you're riding an electric wheelchair indoors.