People want to believe that an AL pitchers numbers would look better in the NL because they'd be facing lesser hitters in the NL, and that NL hitters numbers would be worse in the AL because they'd be facing better pitchers. I don't think you can have it both ways. People go beyond overboard in bringing up differences in the AL and NL. The main difference in pitcher numbers is the presence of the DH. Mediocre AL hitters don't just come to the NL and flourish because it's the NL. The DH versus a pitcher is the biggest difference, as the top hitters in the NL absolutely equate to the top in the AL. Pujols, Cabrera, Holliday, etc stack up to ARod, Manny, Vlad, et al. However, you cannot argue the fact that NL pitchers as a group usually end up with lower ERAs and WHIPs than their AL conunterparts. Right, mostly because they have to face a DH instead of a pitcher. And while banged up guys have to take the day off in the NL, they can slide into DH in the AL.