For every bent leg story, there's a horror story of a forklift destroying a cabinet (which won't happen with legs on).
I've shipped dozens of games both ways, and the only damage I've ever had was a bent leg. That's a $20 part so I went on with my life (didn't even bother making a claim). It hasn't scared me away from shipping that way if someone prefers it. I've also had games shipped to me both ways with no issues.
There's really no way to ensure you won't get any damage, you just hope for the best and properly insure your game. I wouldn't make my choice of how to ship, or whether or not to use STI, based upon the above picture.
End of the day, you shipped a $6,500 game and suffered damage to an easily replaceable $20 part. Would you really want to ship it again the other way and hope for better results?