Using position numbers is the last thing I'd get on Campbell's case about, he's just not very good overall. It's kind of hard to explain, I think it has to do with the tone of his voice or something, and the way he changes it. And sometimes he seems to put on this fake voice, it's weird. You'd have to listen to him call a few games to pick up on it, I think.
But I do like watching him call games with Mulliniks, because you can tell Rance really doesn't like him. My favourite came a few weeks ago, when Marco Scutaro took a 3-2 pitch with the bases loaded that walked in a run. Campbell started talking about how brave it was to take that pitch in that situation, while Rance takes one look at the replay and shoots him down by going, 'that really wasn't that close'.