The top 5 batting leaders are all in the AL and the top 5 pitching leaders are all in the NL....?

It's just as it is. It's a coincidence. The better MLB hitters are in the AL. Every one of these hitters are position players and not DH'ers. As for pitching, that's where the use of the DH comes into play. The AL should be slightly higher ERA's because of it.