I never even noticed this thread. Nonetheless, I must post!
The AoA Magneto was not a 180 from the 616 Magneto. As mentioned above, he was a very hard taskmaster, operating under the philosophy of having to push his students because they didn't have the luxury of time to train and be safe. Hence why we saw Iceman, for example, as we saw him - able to do huge amounts of things, but in a perpetual ice form.
Also, I think it can be debated that AoA Magneto didn't care about Xavier's DREAM so much as he cared about Xavier - as in, the friend who sacrificed himself to save Magneto's life. Forming the X-Men and fighting against Apocalypse's ruthless tyranny wasn't so much about saving humans and reaching peaceful coexistence (note: this is for Magneto, not any of the other X-Men), but more about preserving the memory of Xavier, which in a way involved the Dream. At that point, believing about it is moot. It's about the man, not the Dream itself.
Personally, I don't think AoA Magneto fought for Xavier's Dream. He saved humans so they didn't fall into the hands of Apocalypse's troops, yes. He fought Apocalypse, and I believe he cared more about beating Apocalypse and ending his reign than he did living peacefully alongside humans (10th Anniversary crap be damned). At the end of the day, AoA Magneto did what was right in a hell-torn world not out of allegiance of subscription to Xavier's Dream and philosophy, but because it's what Xavier would have done, and in turn Magneto did out of homage to his friend.