i.e. - what offers best chances of Dallas making the playoffs
Well, if the Seahawks win next week (and assuming Dallas wins against the Bears), then it is another matchup for the NFC East lead after that. If Dallas were to win out the rest of the season, then they would become the NFC East champs, but I don't think that winning out is in the cards for Dallas. If they were to lose one game somewhere along the line, then the tie-breaker would most likely go in favor of the Eagles.
On the other hand, let's say that the Eagles hand the Seahawks another loss - then Dallas would own a potential wild card tie-breaker against Seattle if they finished the season with the same record (this is all assuming that Dallas loses no more than 2 games in the last 4 weeks which might not be a good assumption at all - in fact, I see another final game win/enter playoffs, lose/go home scenario shaping up).
And playing as a wild-card might also be favorable for Dallas given their home/visitor performance this year.
So, who is hoping for which outcome and why? (and this may all be a mute point if Dallas plays like this past game)