I will say Commanders right this very second, but I firmly believe that with home grown talent such as Roy Williams, Terrence Newman, Bradie James, Demarcus Ware, Chris Canty and Marcus Spears that we are sitting in a much better seat to maintain defensive success than you guys are.
I like Taylor of course, but there is no guarantee he does not do some time. I dont think he will at all, but that is a possibility. Carlos Rogers had an ok rookie season, he definitely has potential. Unless I am missing someone that is about all the homegrown talent you have.
Not to say that having outside talent does not mean your defense is good, but by the looks of things, the way you guys manage the cap your players are mostly 3-4 year rentals until proven otherwise.
So in short you guys are slightly better right now, but Dallas has more upside and long term staying power IMO.