"But we’d be kidding ourselves if we believed that all four prospects are going to be contributors at the big league, let alone reach the All-Star potential. There’s a chance they very well could be All-Star caliber players and the Red Sox will be flush with homegrown talent to build around for years to come, but statistically speaking, the far more likely scenario is that one or two of them will pan out as every day big leaguers and only one of them will reach their full potential in Boston. If the biggest return to make the team competitive for the next few seasons comes from dealing members of the Big Four, then why not deal from your biggest strength and turn some of these blue-chip prospects into pitchers you'd like to see starting a playoff game?"
I'm sure that statistical profile is accurate, but one question is, how do you know for sure which ones are the keepers and which are not? If you deal the one that reaches their full potential, that's not good.