Data is always interesting. Just my opinion & I hate to be a buzz-kill, but there are a few points I have complaints on:
1) The first single plane listed was for a
big block! The Super Victor is worth comparing, but on the opposite end of the spectrum in application. Mopar M-1 small block, Holley Strip Dominator, Torker II, and/or other older brands/models would have been good single plane representatives, if available.
2) They didn't include the more common Thermoquad OEM intake. They are suppose to work very well.
3) Some intakes were as-cast while other had some mods. Not "apples-to-apples".
4) The "Stock Iron 360 2V" intake is a Throttle Body/Fuel Injection intake. Not applicable in any way.
This was an interesting comparison as well.
http://www.hotrod.com/how-to/engine/mopp-0108-dyno-testing-small-block-intakes/