You are talking about two different things:
1) You and Gamer 205 said that when Buffer doesnt announce the score in a split or unanimous decision that means that the fight was a draw. I thought the same thing too a while back and I asked the devs. They confirmed that this WASNT the case and that it did not indicate that it was a draw. I was shocked. It was just an issue with the audio.
2) Draws are technically in the game. The judges are able to award 10-8 rounds. When a draw occurs, the game randomly selects a winner. Its all done on the backend so you have no idea that it was a draw.