Hello all, after some debate amongst various members of PDA, it was decided that the ranking system used before did not properly reflect the performance, of each individual duelist on a per duel/match basis. Hence a more accurate way of rating the Battle Arena matches will be used. The method used will be the Elo Rating method. In this rating system, each player starts with a base rating of 1450, as you win or lose a match your rating will be calculated on a per match basis and your rating will go up or down respectively.
If a player's rating is very high and he/she wins against a player with a very low rating, the player with the higher rating might only see a slight increase in their rating while the player with the lower rating might only see a slight decrease in theirs, however if the reverse happens and the player with the lower rating wins, the player with the higher rating will see a large decrease in their rating while the player with the lower rating will see a large increase in theirs, since it is expected that the player with the higher rating has a higher win probability than the player with the lower rating for that particular encounter. The Elo method takes this into account and each players individual strength, when calculating the new rating after each match.

Just a reminder the Elo rating method is a statistical method, as with any statistical method used the accuracy of its results increase as more data is collected. So Battle away people!!!