Looks like AA is moving to a 3-tier award system, a la Delta, only Delta might have a better award availability.
Depends on how you define tier. By any definition I use, AA still have two award tiers, and Dynamic Air Awards are a different option altogether. However, if you're talking award availability, I'd love to hear how you came to the conclusion that DL's award availability is better than AA's--although I don't know that I'm interested in changing your mind.
