I dont know that I would say he works better on a clubby cow than the purebred..the other post here Doonan Cattle Company has a pretty nice Thriller heifer out of a pure char cow...I think its just the fact that when you have a Clubby cow and run a clubby bull over her you would expect the calf to be a lot clubbier than a purebred cow with a clubby bull run over them.
The heifer looks really nice, really stout, and really clubby...the bull looks to be very young in that pic, but I dont see anything wrong with him, and he is half angus, he is pretty much what I would expect out of a half angus...give him some time, you may grow to love him.