Trick Flow small block heads

Wouldn't it be more be the ProCharger that's making the power than the heads?..
Take for instance my engine with all things remaining the same and I spent three k or more gettinggetting trick flow heads again all the bolts gaskets blah blah blah.. what I gained a hundred horsepower? Over my ported 596 heads? Or could I add a $3,000 pro charger...