Board Thread:General Discussion/@comment-13436964-20130726221035/@comment-1512833-20130830000150

And I killed him with ease at level 36. That proves nothing. The only thing we have is his inflated ego telling us that he could have killed Alduin and that is most certainly not a reliable source. If other characters would have agreed upon this statement, then maybe, yes, then it would be some form of validation but as it stands, Miraak is just very full of himself and thus not very reliable when it comes to the truth.