I know for sure that Lawful Neutral has only 9 more combatants, because Gansk reported that in the announcement about Lawful Neutral advancing to the quarterfinals. It makes sense that Chaotic Neutral has 20 more.
Lawful Neutral did better than I expected when I took them. There were many more Lawful Neutral creatures than I thought there would be. Lawful Neutral is a team that has been bad for a long time, and is just happy to be in the playoffs. In next year's BoAA, though, the fans will expect more of them.