It doesn't take advanced physics to see why shipping with legs on is a bad idea. Regardless of how the pin is transported to and from the trucks (forklift vs hand carry...and do you really think they are hand carrying these things around in their warehouses? LOL...yea right), the legs and cabinet mounts simply aren't designed for the forces they are being subjected to when bouncing around in the back of a truck speeding down the highway.
Sure, many have managed to survive it, but no one should ever be surprised if their game shows up looking like this one.
I bet most of you would frown upon someone violently nudging the crap out of your pin while playing, but that's no where near the stress being put on them while travelling at 70 down the road with cornering, braking, etc.