Justin has a quick and dirty study designed to answer this question: “Is the 2009 Reds opening day outfield worse than last year’s?”
His surprising conclusion:
So, what these data indicate is that our speed-focused outfield combination of Dickerson/Taveras/Bruce is projected to more productive–on the order of 40 runs and ~4 wins–than the combination we started with last season of Dunn/Patterson/Griffey. I certainly didn’t expect the difference to be this large, and wasn’t sure it would even be in this direction.
Go read the entire post; it’s very interesting. I’m not sure I can buy the conclusion, but the numbers are there. If nothing else, my high school geometry teacher would love Justin, because he always shows his work, not just the answer.