Carter Thermoquads ~ 'More General Information'

Anybody ever do a comparison between say a 72 340 carb and a 1000cfm comp. one? I started playing with a comp one (yeah, i know, i am cheatin sob), and it is down power all the way through. I havent gotten the tune exactly right yet, but it is far enough off for me to wonder if it will even match the 72' carbs numbers.