Yeah the pedicles are the best way to confirm a match. These two were found within 150 yards of each other but that doesn't automatically mean they are a match. On a few occasions I have found two antlers (and one time 3 antlers) under the same tree that initially they seemed like a match but then after closer examination were obviously were not (from different years, different shaped pedicles, both from the same side, etc.) yeah the bases are the real telling trait. And yes the pedicles on these two are identical.