User blog:Grey-summers19/A Little Confused

I was just wondering about something that caught my eye. I noticed that the charactes from the X-Men: Days of Future Past were listed under the Deceased Characters category. (ALERT: Beware of spoilers) Last I checked, the Sentinel-infested, apocalyptic future was prevented when Mystique didn't kill the guy. I am a bit confused on this. Did I miss something in the movie or is this just a mistake?