It's not confirmed, necessarily, that this front panel really is sapphire glass. But if this is a new version of gorilla glass, it's darn impressive. He stabs it for crying out loud.
Again, if this is sapphire crystal, it's important to note its durability and ability to bend and flex (read: iWatch). It's also important to note that Apple has the market on (affordable) sapphire crystal cornered for the next few years (according to other sources).
High quality parts breed a high quality experience. It'll be tough for other manufacturers to match this sort of complex innovation.