2006 versus 2007 in Battle Royale

Sporting events
2006: Winter Olympics, World Baseball Classic, and the World Cup.
2007: No big crazy sporting events
Winner: 2006

Chinese Year
2006: Year of the dog
2007: Year of the pig
Winner: 2006

Year of
2006: Year of Mozart, marking the 250th anniversary of the birth of Wolfgang Amadeus Mozart.
2007: International Polar Year
Winner: 2006 (although i'm leaning toward the international polar year, but let's get back to reality. Mozart's 250th!)

Oh no! 2006 has 2007 on the ropes! Just one more punch...

Number
2006: Six. Devil number.
2007: Seven. Number of heaven.
Winner: 2007

2007 comes back and delivers the death blow! 2007 is the winner! Despite it losing in all rounds but one, I just like how 2007 sounds better. Therefore 2007 wins.

Are there any more rounds of comparison between 2006 and 2007 that I missed? Oh, I got one.

Roman Numeral
2006: MMVI
2007: MMVII
Winner: 2007 (MMVII is a nice symmetrical number)