Well, the Browns match this more than the Bills, arguably. They've already hired a new President in Alec Scheiner that has utilized football analytics in the NFL (with Dallas), and he'll be hiring at least one major specialist in that regard. The Bills willingness to head in this direction is positive, but it's not an advantage over Cleveland.
EDIT: Another thing that gets left out is that Joe Banner is very close with Kelly's agent David Dunn. Jim Overdorf is good friends with agent Drew Rosenhaus, and apparently this was instrumental in Terrell Owens signing in Buffalo.