If this is based primarily on the film, then Juggernaut's helm has changed a bit to make it look more like Magneto's--at least that's how it seems in the trailer.
Keep in mind, Maquettes like these are usually made prior to the movie, and may not be based on the actor who is portraying them. I agree with Gruson the face is very rugged and enrage, Juggy all the way...and in the trailer his helm is very similar to Mags
I think its Juggy also look at the helm to many layers to be Mags and I dont ever remeber his helm having a little nob in the center. So Im thinking Juggs.