I'd love to see something more scientific with a pressure gauge. I think 'bendgate' was the iPhone 6+, so flexing large phones and causing cracked glass and screens is nothing new.
As would I, but watching the clip makes it pretty clear that the 15 is easier to damage (in this way) than previous models.
His surprise and comment that it was unexpected and done on the first try without much force says a lot more than exact science numbers to me.