thats why the AL wins more? Yankees are AL?
Recently the AL has won more. I don't think it has much to do with the DH. It's more of a money issue and the talent of the teams that reach the series.
In the last 5 or 6 years the teams from the AL that have reached the Series have had way more spending power and talent then the NL squads.
This is mostly due to teams like the Dodgers, Cubs, and Mets (who have the biggest budgets in the NL) choking while the big AL teams, Boston mainly, have been able to avoid the upset until this season.
It will be neat to see how the Phillies handle the Rays. They have a guy in Ryan Howard who could use the rest and be successful in the DH position. The Rays are the feel good story of the year. So even though they should be the underdogs, they are entering the Series with a lot of support. It should be interesting.