It's almost impossible to change somebody's opinion on defense, unless they buy saber stats (or unless they are completely wrong, ie they think Dye is a good fielder and you can use visual evidence to change their mind). I watched Chris play, and it did seem like Nix got to more balls then he did. But again, your eyes can be deceiving. I thought Nix' range was superior to Getz from watching games, but that isn't always the best way to tell. I use UZR to back up what I saw.