It was broken down into 9 categories, and each category was rated. Some of them pertaining to society and the impact the drug has on it. Does X have a big impact on society? No, not at all. LSD? Hell no. Does weed? Yes, very much so. That's why it was higher. Cocaine...obviously not in the same league as herion and meth, yet they rate it second, because it does have an impact on society due to violence from distribution and I believe they mean Crack too.

Is the list wrong in some areas? Hell yes, I don't see Meth or Crack.

Btw, you're pretty naive to the facts of drug use. Drugs don't kill braincells. Life kills braincells. Braincells die throughout the day. Pure MDMA (if you know what that is) does not 'kill braincells' or 'put holes in your brain', and you do not die from it, any deaths related have many, many other factors involved....and that's not what they meant by 'put holes in your brain', they meant it literally. Pretty dumb statement by both you and them.