I've been wondering lately how different suits end up with different shoulder shapes. For example, you've got the squarer Canali and the very soft shoulder Oxxford. The Oxxford has not only a rounder shoulder, but also is more sloped downward from the collar to the sleevehead. WHat accounts for these differences? Is it merely the padding -- i.e. Canali has more padding in the shoulder and, more importantly, at the sleeve cap? Or is it more complicated -- does it have to do with the way the body of the suit is attached to the collar?