what all are you basing your information on?

Without explaining all the ins and outs of it--No, turbos do not cause a parasitic loss in HP...there is no belt to drive the compressor...only the exhaust gasses that are already there flowing out of the engine hence the term "free" hp...put your hand up to my exhaust and tell me that the turbo restricts airflow...

You sound like a "performance handbook"--any one I've ever read says SC over turbo...

turbos have a greater potential for realized horsepower...( boost controller ) supercharger boost is limited by the pulley

superchargers are limited by the engine's rotating speed...

you auto cross much? a supercharger that didn't come factory puts you in a different car class all together...

So, where did you get all this info?