They are very similar and affect different people differently. Your statement is based on opinion and completely ignores the evidence I posted.
Crack withdrawal and heroin withdrawal are not very similar at all. Herion withdrawal is typically far worse.
From you source:
Cocaine withdrawal:
agitation
depression
intense craving for the drug
extreme fatigue
anxiety
angry outbursts
lack of motivation
nausea/vomiting
shaking
irritability
muscle pain
disturbed sleep
Herion witdrawal:
dilated pupils
piloerection (goose bumps)
watery eyes
runny nose
yawning
loss of appetite
tremors
panic
chills
nausea
muscle cramps
insomnia
stomach cramps
diarrhea
vomiting
shaking
chills or profuse sweating
irritability
jitterness
Clearlyu there are many more physical symptoms associated with herion withdrawal.
My "opinion" is based on seeing the evidence. Herion withdrawal is typically far worse physically than cocaine withdrawal. In fact, most stimulants (such as nicotine and cocaine) do not show physical withdrawal symptoms. They are mostly emotional in nature. Depressants (Alcohol and Herion) are noted for their major physical symptoms coupled with emotional symptoms.
My experineces with both withdrawal symptoms is that a person suffereing from heroin withdrawal is quite obviously dopesick. They writhe in pain, sweat, vomit, and generally freak the hell out. A person suffering from cocaine withdrawal will be twitchy, cranky and fairly lethargic, but they are not obviously dopesick.
And that beign said, the worst withdrawals I've ever seen were alcohol withdrawals, which can kill a person. They go into seizures, hallucinate, and vomit.
My reasons for crack being worse than simple powdered cocaine is that the addictive properties and costs are different. The degree of the "high" is different. They are quite similar in feeling, but crack is worse because the shorter high and instant euphoria will lead to an increased liklihood for dependency because more doses will be taken in the same relative timefram to sustain the high.
Studies have shown that crack users will be more likely to become addicted than people who snort based on these reasons.
And the chemical properties of crack are different. Specifically, the fact that Methylecgonidine is created with crack, but not powdered cocaine. This is a more dangerous substance in no small part because of that.
The effects of the high are similar, in fact identical, because the properties of taking a dopamine reuptake inhibitor will have the same effects.
But what makes a drug different has nothing to do with the high, and everything to do with teh chemicals injested.
Thus, crack is way worse than cocaine, because it is
chemically different.