Depends on how shallow that attitude actually is. Seemed more like an half-hearted insult. And like I said, Griffons have issue with Equines, so portraying them in a positive light in a series like MLP might be difficult.
Gilda: Hey beautiful, watcha doing here? RG(Rainbow Gryphon): Nothing much, just hanging. G: I never seen you before. You new here? RG: Heh... you could say that. G: Wanna come get some food? My treat. RG: Are you flirting with me? G: Maybe, is it working? RG: Sweet Celestia, you are bad at this, Gilda. G: How'd you know my name? RG: What? Am I that different? G: *puts two and two together* Rainbow? RG: Eeyup. G: I ...flirted...with... my... nevermind *blush* RG: