Oak, I think those NB shoes you have must be on a different last - or maybe on the same one as the Minimus road? I couldnt' wear the road - it was too narrow.

This is a little comparison I did when I was trying to talk a friend into considering the Leming:


(NB Minimus left, Leming right)
For me, the way the NB Minimus flares out a little on the big toe side was critical to my running comfort.