DanishbluntThat is not true. I can scratch any Victus or not screen with my keys. Everything depends on the hardness.
glass is glass, there is no "good" or bad glass.
Its clearly user induced as it wasnt like this when you got the phone. We don't know the cause but you defnitely mistreated your phone at some point. Also keys are not hard anought to scratch the phone. Looks to me like you dropped it.