Re: Days of Future Past News and Discussion - - - - - Part 14
^ That's the point. The events of the previous games - even beyond the period which the 9th game covers - were not by and large changed.
Preventing the assassination of Richard Nixon will only prevent the dystopian 2023 future from happening. It's not going to create a ripple effect where the events of the Trilogy and The Wolverine don't happen, nor will changing the timeline of and circumstances surrounding Wolverine's Adamantiumization.