Huh... Normally it is reversed. When a catgirl and bunnygirl are seen together, the catgirl is usually very buxom, while the bunnygirl is very flat-chested.
There are many hentai-related examples, but if you want a non-hentai example, read Tokyo Mew Mew and Tokyo Mew Mew a la Mode. Ichigo is a catgirl, and is noticeably buxom despite being stated to be 12 years old. Berri, introduced in a la Mode, is a bunnygirl, and almost entirely flatchested.
Tateha~ said: It doesn't really matter...this is strike witches after all man, they all have ears and tails.
Agreed, while I do understand what OrigamiChimera is saying. I kinda think Tokyo Mew Mew went a little too far away from the rest of the whole animal_ears thing as well. It's just a really.. different style of anime.
Actually the comment Otaku belief is bunny girl=busty cat=smaller/flat. I think a case of it was Digi Cirat (its bunny girl was nicely busted in contrast to the lolish cat girls)
Though I'm amazed that Yoshida wasn't in the pic... this would cause a massive reaction from her oppai sensors.