Originally Posted by M2
Not exactly a eureka moment there for Dewan. First off, comparing the difference between the best and worst in offense and defense is a pretty arbitrary measure of the actual value of those things.
Second, you're comparing one actual thing (offense) with one highly theoretical thing (runs saved/cost on defense). The best Dewan can say is he thinks that's where the defense landed.
Third, if he's right, then the real revelation isn't that defense is worth 50% of offense, it's that it's exactly as valuable as pitching. Half the game is scoring runs, half the game is preventing runs. If defense is more valuable than we thought, then the thing that becomes less valuable is pitching.
I read it as him saying that the pythag theory is valid. No more no less. I'm probably over-simplifying, though. I had the odd impression he was saying that if you divide the circumference of a circle by it's diameter you'll always get teh same number.
It's more interesting to know the relationship between pitching and fielding. Offense vs. Defense is pretty straight forward. Score more runs than you allow and you win.