If you take 1500 faceoffs and go 50/50 you win 750. You go 60/40 and you won 900. Now that 10% or even the 150 more won faceoffs might not seem so much but it's 20% more won face-offs than the 50/50 guy. I think that's quite good.
EDIT: Feel free to correct my math if wrong, not my strongest suit
