I'm afraid those graphs have got me very cranky indeed. I'm all for integration, but this is ridiculous. It is NOT useful for looking at eras. Slopes at left end of plot are less significant than changes at right. A more interesting graph would just show margin of victory, with maybe a smoothing filter (moving average) to show era trends clearer.
Very disturbing. I'm inconsolable - don't talk to me about this again.
This graph is exactly margin of victory.
Bud Adams told me the franchise he admired the most was the Kansas City Chiefs. Then he asked for more hookers and blow.