Rugby vs. American Football

So yesterday, NBC broadcast the Rugby World Cup Final match between New Zealand and France (which New Zealand won, 8-7) and the Tampa Bay Buccaneers played the Chicago Bears in London.  The Daily Mail appears to be most interested in the cheerleaders at the game in London.  I turned on the rugby match for a little while, and couldn't make heads or tails of the game.  I can only imagine that American Football appears the same way in London.  It seems alright for some distractional entertainment, but I don't see either sport catching on with new crowds.