Board Thread:Questions and Answers/@comment-11276487-20131125022524/@comment-4651179-20140323222909

Well, but if it's solved via time-travel, it means everything that happened that will be reverted didn't actually happen in Earth-616. So it's basically just an alternate universe, and kinda makes the story less important IMO, one of the reasons being that none of the characters from Earth-616 would have experienced it. If it was solved with "wizard did it," the characters would still have experienced the events.