You don't want to put too much stock in spring training performances and you don't want to put your head in the sand. The question is: where is the appropriate middle ground?
Now if you think the A's are facing this conundrum, their cross-bay rivals are facing it in spades with their presumed rotation currently being led by ERA leader Jake Peavy (8.31), followed by Jeff Samardzija (8.53), Madison Bumgarner (11.12), Matt Cain (12.15), and Johnny Cueto (16.62). I believe the words you're looking for are either "ouch" or "ha ha ha ha ha!