iv seen both work more bull xs than wheaton xs i like them both and carnt honestly say which one is better depends how its bred. what man owns it, how its broughts on, what type of land its run on theres alot of varying factors where running dogs are concerdned to say which type of cross is better. seen as though the bull and the wheaton used to be used for totally diffrent jobs anyway. guess it depends which owner brags about there dog the most lol.