Both morphine and heroine are highly concentrated. I think even the poppies are very strong without too much preparation. If you want a realistic comparison it'

Both morphine and heroine are highly concentrated. I think even the poppies are very strong without too much preparation. If you want a realistic comparison it'd be coca leaves against cocaine. The as-is coca is a mild stimulant used by natives during hundreds or thousands of years for long marchs. The purified cocaine is a strong, potentially addictive drug.