For comparison, Mark Sanchez and Josh Freeman scored 28 and 27, respectively. Stafford fell just shy of QB Wonderlic mavens Eli Manning (39) and Alex Smith (40). (Vince Young reportedly got a 6.) At wide receiver, Michael Crabtree only got a 15, Percy Harvin got a 12, and Darrius Heyward-Bey got a 14, while Jeremy Maclin snagged a 25. (Pat McInally, punter, wide receiver, and Harvard graduate is the only player confirmed to have scored a perfect 50.)
Apparently this puts Stafford in good company. According to Wonderlic, he has a high enough IQ for any number of professions besides pro quarterback:
Bank teller: 22
Clerical Worker: 21
Security Guard: 17
But what does it all mean? Does the Wonderlic actually help predict who will be a good NFL quarterback? I previously discussed this question here. And, to see a visual representation of the average scores for each position in the NFL, see the chart below (hat tip Ben Fry):
So, while Stafford's 38 really jumps out, Crabtree's 15 doesn't seem all that bad. The interesting thing is what was noted in the original post: the closer you are to the ball, the higher your score.
But the question remains whether the Wonderlic is relevant at all. Indeed, Hall of Fame QBs Dan Marino and Terry Bradshaw did quite weak, both scoring a mere 15. Here's what I said previously:
Yet two anomalies do not disprove the notion. Charlie Wonderlic believes that "What the score does is help match training methods with a player's ability, [like the ability to understand] a playbook. [O]n the field, the higher the IQ, the greater the ability to understand and handle contingencies and make sound decisions on the fly."
I don't have a firm answer either way. I think there's nothing wrong with giving the test, and different teams appear to put varying degrees of emphasis on the test results. Some only care if a player scores extremely low or extremely high, while others take the test quite seriously. The image above clearly indicates it matters more or less depending on the position. Advanced NFL Stats has previously discussed studies that attempted to chart out QB performance as a function of their Wonderlic results. My guess is that the Wonderlic is a weak predictor in the same sense as the 40-yard dash, shuttle run, and the bench press: If you chart out performance with those combine statistics, although you will see a positive trend, it will be full of noise, will not give you predictions with high certainty, and counterexamples - like Dan Marino - will be abundant.