Age of x-man and other stories pre house of x were retcon. jean didnt address the age of x-man or Scott dont mention if blindfold was resuscitated nothing. I remember i read that house of x take place 12 months after age of x-man..basically marvel let retcon these story but pretend house of x take place after them. Secondly the characters act diffrently especially Jean, she wanted united mutants and humans and the same with the rest. its one reason i prefer dc comic than marvel.