I ride with people that use the superflash, and I have the Mars 3.0. It's definitely brighter than the Mars 2.0, and definitely not as bright as the superflash, however in its own right, it's pretty bright. As mentioned prior, the amber side-facing LEDs give it good side visibility as well. The brightness difference isn't enough to make me ditch the Mars for a Superflash. My next tail light will be something ridiculously bright, like the DiNotte 140R