Slide 12 of 15
First boxes: Fast - Avg. Larger runs effect for higher scoring teams (not surprising since they have more runners), but larger percent effect for lower scoring teams (also not surprising since they have less of a chance to score runners with subsequent batters)
Effects of Avg. - Slow not quite as great
AL effects greater than NL (DH most likely)
Roughly 1.8 - 3.6 wins per year from upgrading all nine batters --> about 0.2 to 0.4 additional wins from upgrading one batter by one class.