A bit Pedronicus... but that's just a small problem, in terms of the whole scoreboard, at least as far as I can see, but I don't play that much doubles so I might be wrong...
I disagree with Scud that ranks should be taken for only a certain number of games. As far as I can see a player's skill will ultimately determine their rank as the number of games tends towards infinity.
Eg. A player who wins 1/6 of their 6 player games against average players (score around 1000) will level out at 1000.
A player who's good enough to win 1/2 of their six player games against average players can expect to level out around 2236.
And assuming that players remain at this level of skill they'll remain roughly around that score, dipping above and below it.
... So ultimately your skill determines your rank, so new players have just as much chance of being on top if they are as skilled, once they've played enough games, (enough being less than 50 anyway).