I agree. Considering that there were more than enough enemy graphics to pick a winner from, I think one of the eight or so entrants who submitted an enemy deserves to be acknowledged for being the best of the bunch.
Viewing post in RPG Maker Asset Contest FAQ(English)
Yeah not understanding it at all. I have been rereading the submission guidelines and although there are a couple that can be considered disqualified on those grounds (missing "assetcon_enemies" tag, or priced at 4 dollars), if that is the case they should say so. And even then there seem to be a handful that just are according to the submission guidelines.