CE vs game

Can someone tell me is there a difference between unlocking a calling card via CE or by playing the game? So basically can treyarch see if u did it the CE way or by making it happen. Of course without doing some stupid logical errors like having a master killer and no nuclear ect.. thx guys

I do not want to risk a ban for some silly calling card unlocks unless I'm sure nothing happens. Guess I'll keep grinding on then..