Edgar should have one win and one loss against Penn, and one win and one loss against Bendo. Couple that with him being the first guy to beat Maynard, his win over Sherk, then guys on a lower tier like Franca, Bocek, Tyson Griffin (who was actually doing very well before and after running into Frankie) and Jim Miller and Frankie is ahead.
Ferguson has a few really good wins, and a few very solid ones. His actual streak is incredible, one of the best ever at LW. But his overall LW record isn't as strong as Frankie's and it would actually take a few more big wins for him to catch up, IMO.