I stand corrected. After doing some testing last night I've found that the Mars 3.0 is much more visible than the SuperFlash from the side due to the amber flasher, and much more visible during low light conditions such as dusk due to it's larger bank of lights.

Where the SuperFlash excels is in total darkness where the small but powerful light is noticeable due to not only it's power, but also it's odd flashing pattern.

In conclusion I'd say for riding when it's not pitch black out the Mars 3.0 is more visible than the SuperFlash. During pitch dark the SuperFlash is a bit more noticeable due to it's odd flashing pattern.

NOTE: I've noticed previously that during daytime or in low light conditions the Cateye TL-1000 is more visible than the SuperFlash, yet during pitch dark the SuperFlash is much more noticeable than the TL-1000.