In the newest movie, How does Mystique putting the gun down, effect Jean from turning into the Pheonix?
Guessing here: that the mutant future is a little better for everyone and Jean as a teenager had an easier time this go around. Easier to transition from Marvel Girl to Phoenix. No Stryker situation, where she would have to sacrifice herself. Did you notice how red Jean's hair was? It seemed redder than originally, like she was very powerful. She became the kind of phoenix that was able to control the power that her future now includes marrying Scott ( yeah Marsden, the way it is supposed to be!!) and giving birth to Rachel?