I've had a Lego robot fall off a (3 foot high) table top. Bricks went everywhere but there was no other noticeable damage. My pain system would accurately assess such an event.
It takes about a 3 pound force to disconnect one Lego stud and about a 2 pound force to disconnect one Lego brick pin. On the other hand it takes about a 5.5 pound force to disconnect one Vex IQ connector pin.
A Vex robot may possibly be susceptible to damage which is not detectable by Asa's pain system alone.