Thanks Kurt. Yes, that's a fact, but not a reason.
I once played a little bit with Max, and I hated the interface, even those coordinates with Y not pointing up... I don't know, maybe I'm too used to Maya. But there must be some reasons, maybe the modeling tools are easier to use, and, of course all those architectural materials that come with the package, but, come on! That’s nothing compared to Maya's node architecture, or the hypershade, or the nurbs tools.