Beam shots can be deceptive. Cameras are not linear, and have light metering that can make headlights with more light in the central "hot spot" appear to be brighter than they are. Also, the linked site's use of a lux measurement after bouncing the headlight's output off a white ceiling is also prone to error. Those results are going to be heavily influenced by the light's reflector design. More of the light's output in the "hot spot" means a higher reading.
Beam spread angle, "hot spot" spread angle, output percentage in the "hot spot", and total lumens output are the four specifications that really describe headlight performance. All four are easily measured with a simple luxmeter.