Yes, exactly. Most people don't like to talk about this fact. Gorilla Glass 2 is thinner but contains more pulverized dehydrated gorrilla per cubic centimeter than Gorilla Glass 1 does. Some people have claimed they heard a very faint gorilla growl in the middle of the night even when the phone is in airplane mode-- some see an apparition of a gorilla with glowing eyes appear if only for a few moments, on the phone's screen. Middle of the night gorilla teeth mark bites are much less common.
Seriously- the phones are scratch proof from things like metal keys but it might be that a piece of glass or sand, jewels, crystals etc(harder than metal so hence more apt to scratch) could possibly scratch the surface. It could also be that the manufacturing process is not perfect so in which case you have some glass come out that cannot be scratched with keys and other metal objects but other glasses can. The box of Note 2 and S3 both say they have Gorilla Glass 2 on them- the case is so badly made on the S3 that even if you drop it from a small distance you can shatter the glass-- the Note 2 is much stronger but it has been proven - with good cases that protect the phones all corners/edges and absorb the shock with hard plastic and rubbery material is best you will greatly decrease a shattered glass incident risk(costs 240 just to replace the glass- we should have a class action suit for this- I have been careful from day one so hence no scratches or cracks but they don't even warn you at the phone store that if it slips and falls without a case, even a matter of inches it can crack the screen). Also note that by adding the stick on plastic screen protectors they seem to absorb the shockwave that would otherwise crack the glass and thus prevent the screens from stattering even on their own without a case-- however the best way to go is a good case-- some with a flip-closed cover or similer to cover the screen (that is optional which may provide an extra layer of protection but doesn't appear to be essential)-- add the case together with a plastic stick-on screen protector and you get the best protection from a scratched, shattered or cracked screen.