Board Thread:Questions and Answers/@comment-7708862-20130402005255/@comment-4484409-20130403173440

Yammi is only 0 when released. That means that only his released form has the power to destroy Las Noches or be stronger than the other espada. Also, Ulqiorra said that 4 or higher could destroy Las Noches, not that it for certain would. I don't see the contradiction or the plot hole.