Behind the RPM, above the Stealth, the margin between them would be very thin, IMO. The thing with the RPM is the path on which the air and fuel travel being a much nicer route even though the total cfm isn’t as great as one would think.
Yes. He also ran a large (IIRC) TQ carb. He contacted me on the subject but I have not heard or read anything by @Locomotion on how it all turned out.
As the power level goes up the difference becomes larger.