Utter nonsense, and them saying that those lines meant anything is BS.
Screenwriter confirmed it when DOFP released.
“We talk, maybe too much, in the movie about this notion of time travel, or time continuity, where the river of time keeps going in the same direction, but you can shift it a little bit. You can put a pebble in and see at least a splash. So at the end of this movie, we want to feel like the current is going in the same direction. Charles went off and started the X-Men, but the way he did it and the people who are part of the X-Men are not exactly the same."