I've "felt" for a while that the preponderance of participants in the World Series have come from the wild card and that there is some advantage of playing for the wild card and not the division.... Nothing concrete, just something didn't feel right about it.
So a bit of simple research shows that the Wild Card team has been involved heavily in the Series....
Wild-card World Series participants
1997 Florida Marlins - Champion
2000 New York Mets
2002 Anaheim Angels - Champion
2002 San Francisco Giants
2003 Florida Marlins - Champion
2004 Boston Red Sox - Champion
2005 Houston Astros
2006 Detroit Tigers
2007 Colorado Rockies
2011 St. Louis Cardinals - Champion
Still don't know what I make of it, but there is a heavy volume of Wild Card in the World Series...