The Samsung Galaxy S III comes with the Corning Gorilla Glass 2

I recently got a Samsung Galaxy S III. The specs says that the S III is one of the first phones to utilize Corning Gorilla Glass 2.
The Corning Gorilla Glass 2 according to their website corninggorillaglass.com is 20 percent thinner than its predecessor.
How would this reduction in thickness affect the new Samsung Galaxy S III's ability to resist massive impacts?
