Team's in any era who are able to run the football, play strong defense have been successful. This is a winning formula that travels. The 49ers most recently have put together this type of team, where they were in the NFC Championship Games last yr and also had a SB appearance.
I see the Cowboys slowly resembling the current 49er team, although still not there yet inside the trenches. They are able to successfully run the football against most teams, have a great pass rush that can generate pressure without the need of a blitz. Must get better at stopping the run and they have the ingredients to make a deep playoff run. They will have their opportunities to do so as they face Taylor, Henry, Cook still on their schedule, along with a few others. Believe their pass protection must improve as well.