Uh.......
Not sure if you are trolling or not, HTC One has been using corning for every generation, they just dont advertise that since there aren't anything to talk about.
The video shows that the phone display is facing the ground on impact, its pretty obvious that it will crack. There is a test that did similar test already on S6, the glass also crack.
It doesn't take a genius to figure out display on impact would crack the glass.
The video that shows earlier was done by a korean girl, and on a flat plastic ground.
Something should be pretty obvious.....
Not saying S6 is not durable, just saying it still crack if you drop it on the same scenario.
Then you clearly haven't seen this video:
https://www.youtube.com/watch?v=gdkPKeOVOrk&feature=youtu.be
The Samsung Galaxy S6 / S6 Edge has superior build quality compared to the HTC One M9.