Is it just me or has the TK book deviated in it's history from the Nagash books that have been written so far?

Examples:

In the TK book, Nagash was defeated at a siege against him. In the books it was Nagash who was attacking.

In the TK Book, it talks about Lahmia doing it pretty much themselves. In the books it is Arkhan the Black that turns the queen into what she becomes.

If I am correct, it is just plain annoying that they could not get simple things like that correct.

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