They noted Bamas YAC with the receivers being at 10.4 and they also noted it was first in the FBS. In contrast they mentioned LSUs DB's only allowing 4.2 YAC and how that led the SEC.
I'm not sure where the official stats for YAC for receivers happens to be found. I somehow suspect that there's a bit of a difference when one is leading the FBS, and the other is leading the SEC. I'd like to know where that later one fits within the FBS.
According to them, Bama receivers lead FBS (Offensive stat) and LSU DBs lead SEC (Defensive stat). I can't find the stat anywhere, even after looking through posts in other large football sites also looking for them. And those have to be numbers they pulled out of their asses due to the other numbers below.