Over at What the Heck, Bobby, there's a little note about an exchange between Jayne and Jeff Luhnow on the analysis of minor-league players:
He agreed with me that the use of stats such as BABIP and FIP, etc. are not particularly useful in analyzing minor league players, especially at the lower levels since the competition can be so uneven. He explained to me that his staff will be delving much more deeply. They will literally be tracking every single pitch and every single stroke of the bat in every single situation. They aren't just looking at atoms; they are looking at quarks and neutrinos. They will be able to view a player's performance at the most fundamental level in order to facilitate that player's maximum potential and predict future performance. That's smart.