Which is more realistic? Human or CPU controlled shooting?

I've just been playing on All Star with Human controlled shooting. Does CPU controlled shooting give you more realistic shooting percentages? I play in Arcade mode with the rules turned on.

Playing CPU control shot doesn't give you the same feel as the user control option--with the User control you can tell if the shot's going to go in (like real life) or if you're going to miss--

as far as %, it depends if your a good shooter or not 8)