Taking pitcher's risks into account, and the added value of position players > pitchers...
For the 1st round only... I don't think I would select a pitcher over a position player if they were tied in Org evaluations. Extending that... I don't think even a 10% better pitcher overcomes injury risk or daily playing value risk...
So... IMHO: A 1st round pitcher would have to be significantly better than a position player for me to make the pitcher that selection. I don't think Jobe qualifies as that over Mayer. But I don't know how to quantify that, exactly. If Jobe somehow turns into Clemens and Mayer into Alex Rodriguez or Derek Jeter (just dart-boarding), who has the higher value?
In hindsight it's easy to say that Verlander was the worthy #2 selection. At the end of their careers maybe the same will be said of Jobe.
I'm glad I don't have to make these decisions.
But my point remains, 1st round only (after that just take BPA and don't worry pitcher versus position (can't draft ZERO pitchers... right?)): there are two pitcher's risks that should drop them in evaluations against position players: everyday playing value (pitchers lose) and injury risk. So selecting a pitcher in the 1st has to mean he is CLEARLY head and shoulders (however that gets defined) then the next position player....
IMHO.