what pistons to run with set up??a bit of help

Their clocks cleaned how?
Your kidding right?

Sounds interesting. Was this a direct head to head comparison?
As close as you could unless you yourself built both engines for the comparo.
Could you be a little more specific with the examples? Engine size, engine type (Ford, Chevy, Mopar, big block, small block), intake type, head type, valve size, airflows, port volumes, camshafts, carburetion. I too have heard of this, but have never seen any actual tests.

Nope. But I do think you know what I mean and your just fishing around for something.
You know as well as I know that there is always a better way to skin a cat. Thus, building a better engine, more thought out than just shove in the biggest cam in the book, slap on the biggest flowing port windowed heads in the book, getting the largest Holley listed, etc....