Dolphins are a team a lot like we are...came into the season with high hopes but sputtered out of the gate. They seemed to get a boost from Campbell being named interim coach but I think that has kind of worn off now.
On offense, their OL is not very good, especially their tackles, although I believe they are healthier now than they have been. If we can't find a way to sack Tannehill at least 4 times I would be shocked. Tannehill is fairly mobile but does not have much in the way of pocket sense. Miller is a better than average RB and Ajayi seems to be a good backup. Receivers are decent but many teams have killed us more with TE's and backs so we need to hold them in check.
On defense, their pass rush has not been anywhere near what was expected. I believe they only had a sack or two until the week that Campbell took over. He has changed the scheme some and the rush has been more effective than it was. Brent Grimes is their best corner but is a guy that gives up a lot but makes some plays. Many think Rashad Jones is among the best safeties in the league and he has had a good year.
Overall, two teams that had big dreams at the start of the season but are holding on by thier fingernails. Dolphins have blowout losses to the Jets and the Bills so really can't afford many more losses and of course we know Dallas at most can lose one of their remaining games and even that doesn't guarantee them a thing.
Basically comes down to who plays with more desperation in my mind. Dallas hasn't been good at that this year, but we haven't had Romo for the losing streak,