What good do 5 starts in AA do? What do you do then, if he's the guy they think he is? I agree with the above poster, while there are guys with higher ceilings in AA, there are also a bunch of guys that won't even make AAA, let alone the majors. In AAA, there are legit MLB players, and AAAA guys and AAA guys. AAA is definitely a better all around challenge in terms of facing consistently better players, if not stars. And, for a pitcher especially, that would be a better challenge. Half or more of the hitters Meyer faces in AA aren't good MLB prospects. I do think Seth has it right, but I'd much rather Gibson was up if he was ready, and Meyer was in AAA getting challenged by nearly every hitter. If Gibson looks ready, there is no reason to have him in AAA, at his age, and have KC or a random guy up here, imo. Heck, if it doesn't matter if a guy is at AA, send one of the random AAAA pitchers in Seth's list to AA, and put Meyer in AAA. I prefer the challenge your stars route, to the protect your stars route. Some teams do one, some do the other. I'm sure neither is drastically different for the eventual outcomes though.