I asked Brandon about [the destruction of the Choedan Kal] tonight at the DC signing because it bugged me too.
Sanderson said Rand realized that he did not need the Choedan Kal for the Last Battle. He also said that Rand was not at a point where he needed the Choedan Kal for anything he wanted to do.
He said the sentence in a way that leads me to believe post epiphany Rand is much stronger than pre epiphany Rand though that is my interpretation of his sentence.
On the subject of the Choedan Kal, he said that the True Power was not as strong as someone with the Choedan Kal. Just it felt as tempting and as addictive as the One Power through the Choedan Kal.
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