http://statsportsconsulting.com/main/wp-content/uploads/FaceoffAnalysis12-12.pdf
From the link...
At even strength, it takes 101.6 faceoff wins to account for a +1 goal differential due solely to faceoffs. 60.1 in the off/def zone, 163.8 in the neutral zone.
Using the above, & Stepan's d-zone faceoff stats last year (49.3%), won 244 faceoffs, and lost 251 faceoffs. Using the 60.1 baseline for wins leading to a goal, Derek Stepan accounted for 4.06 goals for, and 4.18 goals against, for a differential of -0.12 over an entire season.
Actually, this is a little off. The numbers above are all situations d-zone draws.
Stepan was 52.5% d-zone draw player during even strength. The numbers need to be juiced a little, but do you see the overall point I'm making, at least?
We have a tendency to remember that one lost faceoff that led to a goal against (a lot more than the won faceoff that lead to a goal for), and totally disregard the won or lost faceoffs that didn't amount to anything, which happen far, far more often.