Well, compared to other comps, there are infinite differences. Some of them are subtle. If you have a more specific question about comparison, let us know.
As far as settings, really the only important thing IMO is to keep the sustain knob as low as possible, while still getting some compression. I find that 9:00 is pretty good for most basses, but anywhere from 8:00 to 10:00 will work, depending on the output level of the specific bass, and how much compression you want.