Scrypt.cc Admin claims to have sold 500 GHs of scrypt mining, I don't know any reason to doubt this as it is very consistent with what I and other saw.
So, first you see no reason to doubt, and then you say this:
My claim is the actual mining is probably closer to 160 GHs, of which 100 GHs has been sold to users.
So, what made you change your mind before the end of your post?
lol, you need more focus, then you would see its just a scam plain and simple.