Well it doesn't have to be the same if you think bout. The future characters will be of the days of future past universe not the last stand universe. So in turn when at the end of the movie they stomp sentinel's from taking over history will be rewritten and then the universe will line up with the men x2 and last stand universe.
I voted Don't Care. I love X Men, yet I really don't think there is a good X Men movie, nor will there be a good X Men movie anytime soon. I do want a complete reboot of the franchise eventually but I want Marvel Studios to be involved. I don't want another Amazing Spider Man style reboot.It doesn't matter if they change things up just to put out another bad movie.