Avengers: Age of Ultron Ramblings

The more I ponder "Avengers: Age of Ultron", the more it feels like an escapee from a Mirror Universe. Sure, the Doylist explanation is that it was directed by Joss Wheadon, who would consider himself a coward if he didn't destroy continuity, but I have no ideas about what a Watsonian explanation for this would be.

( rambly spoilery discussion )