IMHO, more development effort has been lavished on single four barrel manifolds than on any other carburetor configuration. That being the case, small wonder that they perform well versus the 3x2 that are virtually unchanged since 1970. I'd be interested in seeing a 3x2 vs 1X4 vs 2X4 dyno challenge using the Indy LA Mod Man. Granted it may not be the best manifold, but it would put everyone on an equal footing. As I recall previous dyno challenges, several times a smaller cfm carb has turned better numbers than a larger one.
