From mlb.com: "Playing as visitors in NL parks under house rules, AL pitchers -- you know, the guys not trusted with using a bat most of the season -- went 10-for 47. NL pitchers went 2-for-37. ... AL designated hitters also took their inexperienced NL counterparts to school, going 17-for-62 to their 12-for-63." Funny, the AL pitchers ended up with a bigger advantage than the AL DHs. A step further, here's the OPS breakdown: AL DH .948 NL DH .508 AL P .498 NL P .179 Big differences, and the end result is that the AL wins 3 games more than the NL.