Dallas simply cares a lot about winning against Miami, to try to ease the pain of that defeat. So I can't help but think that it would have been a good bet to go with Dallas against Miami. And in general any team that gains supremacy over an opponent who handed them a bitter post-season loss, will consistently deliver victories against them. Being the better team, it is a matter of effort and focus. The painful memory will ensure both.
This is a formula that could be applied to the future.