Is a Vortec Cyclone, for cars' intake, actually considered a supercharged?

its pretty much bs, i thought it was so i checked the link.well first it restricts intake.i know its supposed to speed up flow,etc,but when you stifle off almost 1/3 of diameter with restriction it cant be good.a turbo,blower or supercharger gives a positive displacement of air in the cylinder.if that does that, its minute.its a waste of good money,my humble opinion.