That's right, while Zito's career BABIP against LH is virtually exactly league average, he has a BABIP of 42 points less against RH! Zito has 3200 BIP against RH, meaning one standard deviation would be 8 points. His performance is FIVE standard deviations from the mean. That is about as significant as significant gets.
There's also some vigorous discussion of the articles going on here and over here, which might be quite illuminating if you can read Korean, which I can't.
As for the Man Underneath, I got nothin', except that he's currently serving as the punchline over at Humbug.