Dec 22nd 2010 8:59PM Actually the minimum number of people who can get into Tol Barad before 1:1 is enforced is 25. For some servers the only time the attackers have been able to win has been late at night when they take advantage of this fact and have games that are something like 9v25.
I think there are 2 main problems with Tol Barad. Firstly, there's the cap mechanics as mentioned in this article favoring zerging over actual pvp skill. Secondly, the victory conditions favors the defenders. To win as attackers you have to win 3 battles simultaneously, so assuming 3 equal sized attacking groups fighting 3 equal sized defending groups with a 50% chance of winning each battle, the attackers only have a 12.5% chance that they will win all 3 battles. If the cap mechanics were changed to limit the number of people contributing to a cap to 20, you might still see successful turtle strategies and successful zerg strategies because of the victory conditions still favor the defenders.