My friend and I have come to the conclusion that http://www.googlefight.com doesn't actually hit google for its results every time, based on the fact that "coca-cola" beats out coca-cola on googlefight, which should never happen (and in fact doesnt.. actual google results are totally different).
"coca-cola"
70,800,000 results
coca-cola
65,100,000 results
-googlefight
http://www.googlefight.com/index.php?lang=en_GB&word1=%22coca-cola%22&word2=coca-cola
Sorry if this is old news, i just thought it was weird.