http://www.pixeljoint.com/pixelart/17792.htmSprite or Pixelart
I could easily see this being used in a game, + it's animated, but, oh no, it's big and detailed! D%
I still don't understand the difference between a sprite and a PA, but they're made in the exact same way so I don't see why one should be banned.
And if it's really an issue, then whoever starts the comps should say "no PAs" or "must have at least three dramatically altered poses" or "must be no bigger than [X dimension] by [Y dimension]," since the sterotypes seem to follow that "big + detailed + not animated = Pixelart"