James cannot go out there and call to his own authority of having been clamoring for some greater truth for 30 years and pointing to his best examples and expect me to buy it as more than arrogant, self-serving bluster. What is needed is a study. A real study using a lot of data. What is needed is a comparison of the standard performance change magnitude (pick your favorite win stat or FIP/EqA type number and see how much it changes for guys in transition in the big leagues...and then compare that to the deltas between MLE-based projections and actual performance at the big league level for transitioning prospects). Until he does that, he just sounds like a jerk puffing his chest and proclaiming that he is right and everyone else is just not willing to see his glory.