Bitbrawlers is a parimutuel game. Odds are variable and the prize pool is from other players betting. Betroar has no stake in who wins, loses, or if there is a push. They collect a platform fee after each match.
If anything, Betroar has an incentive to have a result be determined, as they only collect the platform fee when winnings are paid out. In the event of a push, you simply get your original stake back, without any cut taken.