The game ended in a tie. In the Pokemon world, you both drew your last prize at the same time, and the game ended in a draw. There could be an exception to this, though:
If either player did NOT have a bench and the other did, then the one with a bench would win, because they had fufilled 2 winning conditions (benching their opponent and taking 6 prizes) and the other person fulfilled only one.
Help some?
Scott