I think the weight forward and length would really favor the DF. I like the piercing tip look on the M9, but it would remove some weight. I wondered if the edge geomotry might make it bite deeper then the DF. There also has to be speed factor that might give some advantage to a lighter more balanced blade.

My guess is the M9 would be the better knife, where the Dogfather would be the better chopper/entry tool/ teeter totter...