Doc...the reason I cared at all about the comp to Alvarez is that the type of hitter matters a great deal when trying to predict how they'll do in the near future. A guy who is relying on power without the developed EYE or HIT is going to need more time in the organization to learn those skills before he gets promoted. Alvarez is doing very well in AA, but it's understandable that Pittsburgh might want to ease him in. A contact hitter with great batspeed and a great eye does not need minor league at bats to learn how to recognize pitchers or what have you...he's already developed in ways that matter to a major league game. I don't think it's asking much at all for Ackley to hit a slap-happy .290 with good OBP next year. His kind of skills translate well to the majors more often than not.