Yes, they did rank the regional champs. Rankings not listed on the brackets, but usually not too difficult to figure out.
It's extremely easy to ID in AAA -- there are 5 regional champs. So, any time 2 regional champs meet in the quarters, they're the 4 and 5, and the winner gets the 1 in the semis. The regional champs in the other half will be the 2 and 3.
Also, without going back to look: I think the #1 seed is the first guy at the top of every bracket. Could be wrong about that, but after a while it sure looked like a pattern.