This is kind of a specific post, if you've ridden both that would be most helpful.
So, I've ski's higher din bindings for the last 15 years. I usually only ever ride my bindings at 10-11, but have always personally felt that riding higher din bindings lower in the range had a generally better feel. Certain bindings have a significantly different construction that have a tangibly different feel. For example the old 916 salomon bindings had a completely different toe and heal than the 914 and felt completely different on snow.
The pivot series is a different all metal toe piece on the higher din units than the 2 wing plastic lower din toe, and such I always felt ski'd differently.
On the tyrolia/4frnt, it seems the build is identical, anyone have experience with the 13 over the 16? I'm just debating if there really is any actual difference worthy of the higher din unit.