paulmilbank: Z2 or Z3 might be a good comparison to try the same test on.
Ran into a piece of steel attached to a 20t guillotine at work with my Z1 in my pocket, bent a tiny bit and broke my screen (actually bruised my leg too)... straightened it, tried to bend it again to show the mrs how bent it was but I couldn't do it to the extreme of that iphone.
I think the sony frame is a tad thicker (as is the phone in general).
I'm not even going to try on the Z2, unless someone else pays :)