Persoanlly, in the games we've played we've found Khorne has romped it everytime apart from the first time we've played it when Nurgle won. One player, who is a rabid fan of all things Khorne, insists that the way to beat him is for the other players to essentially gang up on him for the first 2, 3 or 4 turns. Fine great idea, and I'm sure it works really well, but don't you just feel that it totally goes against the nature of the game that the other powers would in any way work in co-operation.
For my worth, I would have been happy if the errata had stated that the card was wrong and that the example on page 23 of the rule book was wrong. Khorne would be slowed down quite a bit if he had to get two kills to score a Dial Token, and I think make things more balanced. I just don;t like the idea of the other powers working together, it just doesn't feel right.