For me those charts are way too non descriptive, there is more to each drug than simple graphs can portray.
Heroin (and other opiates) while having and extremely high physical dependance, has a rather low psychological dependance, and as far as physical harm, heroin itself (diacetylmorphine) does not have much of a negative effect on the body. It is quite potent (elevated risk for new IV users to overdose), while having a relatively low toxicity on the body. As far as withdrawal, heroin has very high acute withdrawal effects (5-9 days), but very minor to nil long term withdrawal effects(3-6 months). Babies born addicted to heroin must go through the acute withdrawal period, but after that is over they appear to grow up with no ill effects. Intoxication and inebriation is quite low (until you get into very high doses)
Cocaine (benzoylmethyl ecgonine) is almost the exact opposite, Low physical dependance, extreme psychological dependance. Cocaine has no real acute withdrawal, But has some profound long term mental withdrawal effects that can stick around for upwards of 2 years. effects on the body depend on method of administration, Repeated snorting can cause severe damage to the nose. Smoking freebase cocaine (crack) can cause breathing difficulties. Babies born to cocaine using mothers suffer symptoms that closely mirror FAS (Fetal Alcohol Syndrome) and can suffer from disabilities that can hinder them severely there entire life. Cocaine can also be passed through the mothers breast milk. Intoxication and inebriation is quite low
If you want any more info on any other Drugs, or Addiction feel free to ask. I just didn't feel like typing about every abused drug there is.
(P.S. - These are not meant to be complete descriptions of all of the ills, or effects associated with their usage. I just wrote them quickly covering the major points. The above information is related only to repeated use of the drugs listed, The occasional use of (almost) any drug poses no primary health risk whatsoever)