why do you guy's like a turbo vs a centrif Supcharger?

Not to stir the pot........but alot of claims are made here. Anybody got any proof that superchargers take x amount of power? Not what you read on a web site, or an edjuemacated guess, but proof? No real way to tell if a turbo is actually costing hp is there?? Other than theory?? Read in a previous post that a fuel car takes 800-1000 hp to turn the blower. Take into account the air/fuel ratio, which I believe is about 2:1 and that is not at all surprising considering that the vanes will be moving more or less liquid thru them. It was mentioned that NHRA banned turbos a while back in the Pro Stock class at least I think it was mentioned here, any proof?? Not in some Hot Rod magazine, but real proof? Maybe I am way off base here. Hell it does not really matter to me, I will be throttling a big cube EFI HEMI one day hopefully. One thing that might convince the nay sayers of "turbos being free hp/superchargers dragging "x" amount of power" is undeniable proof. Not what you think is real, or what a text book says, but cold hard dyno sheets. It is, after all, very easy to make claims of any sort. If I am way off base here I do apologize.......just the view from my side of the street.