Both have supposed StVZO compliant beams which directs the light forward and down to avoid dazzling other road users. They are pretty much the same size, but I was surprised at how poor the Specialized is at controlling the beam.
Fluxient Elite Specialized Flux Expert
I was also surprised that they were equal on brightness measured at 1mt: Fluxient = 6790 lux, Specialized = 6780 lux. The Specialized produces more light overall, but it doesn't control it much better than a conventional light.
The run times on highest mode show a big difference: Fluxient = 3 hours, Specialized = 1.75 hours.
The Specialized also had a problem over heating and had to be returned for an upgrade.