It is the difference between a Mercedes-Benz truck and a Yugo.
The quality of the LEDs.
The ARRIFLEX uses very high quality tightly binned LED elements (do a web search for LED binning for an explanation of that), and spectral distribution, very likely has a better regulated internal power train, and the LEDs are not over driven, as opposed to the work light.
Designers of work lights don’t have to concern themselves with those criteria.
So if you care about the quality and consistency of the light , you go with the Arriflex.
there are also differences in beam pattern, hot spots, etc. but as the first responder pointed out, some diffusion in front of the work light will even that out.