Most TD's are not elevated slams right on the neck/upper spine. They're more like trips, whizzers, hell half are just slowly dragging a guy down against the cage wall while holding a single or body lock until they are sitting on their butt. the skin irritation from the chain link is probably more painful.
I've experienced every kind of td there is. when a grown man comes down on top of you trying to cause pain...it works.
...in addition to the skin irritation