Ah, the elusive rare candy. Sort of like steroids, weren't they? I jacked up a Pidgey on a shit-load of them once. As I understand, a level 40 Pidgeot, off his tits on rare candy, isn't nearly as capable as, say, a rare candy-free Pidgeotto on level 25. A Pokémon take on 'The Drugs Don't Work,' possibly. Actually, to a Pokémon layperson, that all probably sounds mental.