From what the Dev blog says you need to have the cruiser prerequisite for that race for it to count. If you only had amarr cruiser III and BC V you would only get Amarr Battlecruiser V not any of the other races. At least that's the way I've read it.
Cecil Montague / Capri Sern - PCGE Consultant
"There is no such thing as an effective segment of totality" Bruce Lee - The only man with a Chuck Norris Killmail