I have been Carrying a traditional fire extinguisher it can be reached by the driver or passenger front seats.
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I add the Element for it's non-toxic and cleaner approach to putting out fires.
There's no denying that the traditional fire extinguisher give a much more powerful initial burst, but it only last 9 to 12 seconds where the Element last 50 seconds.
I am in no way endorsing or promoting the Element extinguisher.
I would say that the comparison was pretty bogus in the video. with the traditional extinguisher the fireman is a half a step a way from the fire and leaning over when he pulls the trigger.
With the Element he's standing straight up and three steps away and off to the side

then he steps in and leans over the fire. my guess is that it was payed for by Traditional fire extinguisher companies that don't want to lose business.
This video is probably leaning the other direction but give a lot of information about the product