I mentioned that above in my review, but that really didn't bother me. Like Deathstrike in the second movie, they have simplified everything. And unless they where going to make a Juggernaut movie, trying to go into the differences of his background would be pointless.
I did like the Juggernaut of movie, it captures his personality at it's worst pretty well. And they did as well with his apperance as they could short of animating the character.
Jay