I agree with this , my first thought too. How could they not of tested for this? Have you seen the Iphone 6 drop test too? Its not pretty.
I do not think this effects the normal version of the 6 from what I have seen. But it would be easy to bend over with a phone in ur pockets , accidentally sit on it or something and have it warped. Defiantly a fuck up at the design stage and Apple usually ahead of the game design wise, they slippin lol.