You'll always get more HP out of a Turbo because you can adj the boost. With a supercharger the boost is always on, and at a set level, and it is belt driven so it consumes 40% of the hp that it puts out. So for every 100hp you gain with a SC, you only put 60hp to your wheels. (my figures may be slightly off, it's 3:45am here)
Turbo's Run on air, They work easier to produce more HP...as long as your engine can take it.....
