No, unfortunately that isn't true about the ACC VS SEC in bowls. Not even close in fact. The following is how each conference did in bowl games since 2010.
SEC 63 - 35 (70% of SEC teams playing each yr) 7 natl champs
Big 10 37 - 48 (61% of Big10 teams playing each yr) 1 natl champ
ACC 40 - 51...