The difference between Link and other strong characters is that it is really hard to see Link lose. Even after a Link-less bracket gives us a winner the winner probably won't be guarenteed to win the next contest unlike Link.
Of course game releases will be a major factor on whether the trend we see today will continue.
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BOP Results: http://www.freewebs.com/charmander6000/Rivalry%20BOP.xls
Congrats to SuperNiceDog for winning the guru contest.