#4 No contest, just pure, utter humiliation
When Wyatt defeated Balor in the middle of the ring, he humiliated The Demon King by pouring a red, viscous liquid on top of him. Balor seems far more ready for revenge than he ever has been in the past. We are certain that his revenge does not just entail winning a wrestling match, but instead, involves humiliating Wyatt to the same degree as he humiliated Balor. There are bound to be mind games, and because of the limitations of a stacked card, there is a possibility that the match may not even begin.
Imagine this scenario. Wyatt walks to the ring, ready to take on whatever lies in store for him. Then Balor's music hits and we see the appearance of the Demon, up the ramp, sizing up Wyatt. Before the match can even begin, the floodgates open and Wyatt is drowned in the same blood-like liquid. This would protect both men and not have either have suffer a loss on such a grand stage as SummerSlam.