Dinotte tail light is much brighter and has a wider spread than the PB superflash,
the flashing mode is also superior as its faster.
I have both lights and the PB is no match for the Dinotte. PB is at the bottom and Dinotte is on top in the picture.

In practice the Superflash has to be also seen straight on to be most effective.

However the Dinotte is expensive, but what price do you place on your safety



From a slight angle the Dinotte does have some side illumination.