Understandable. The way it works though is the sound has to end up in the same place, with the angled drivers they just get to the ear more direct with less bounce off the back. High frequency sounds give us the most direction (since they're most directional). The lower frequency stuff affecting the back of our ear (which we would only feel there) we don't perceive directionally as much. It can be tricky to explain, but it's why properly set up 3 way studio monitors have the tweeter / mid driver in and the bass drivers farther out when seated on the mixing console or desk. Many do the reverse thinking it will widen the sound, when it doesn't, and the bass driver being closer actually messes with the clarity vs. the proper setup. In every test, directionality wise, at least with panning and perceived depth (reverb tails, etc.) I prefer angled drivers. The MDR-Z7 being a great example in terms of the 3D soundstage.