I don't think it's fair to compare Sherk to Maynard in this case. Sherk is hardly the most scintillating of fighter around, but it's not for a lack of effort. Dude just doesn't have the stature to do much else. Maynard, on the other hand, is more than willing to simply jab, 1-2 and blanket an opponent on the mat for the win despite enjoying a massive size advantage over most of the division.
To compare how I think the fights will differ, I think Sherk will be more willing to exchange hands with Edgar, and will be more vulnerable for it as he'll suffer from a reach disadvantage and won't simply have Edgar's punches ping off as Maynard did. The wrestling will also be more closely matched, so a quick takedown for Sherk whenever he feels like it will be tougher to come by. I forsee more back & forth action, though ultimately in a fashion that we've seen before that offers no decisive conclusion.