Risa

I literally just told you, size. You can go look up the exact ship specifications if you want, the Raptor is a small scout ship, the BoP is a mid-size warship, and the Warbird is a full-sized warship.

Also what are you even talking about, what came into canon first? Of course the Bird of Prey, its from ToS, I do not understand how that is relevant to the discussion.