What tie-breakers/schedules/records are you looking at?
We would not lose tie breakers with the Panthers. They would have to lose 3 to even be a factor. They are all NFC games. They only have one less loss in the NFC than Dallas. If it went to tie-breakers with Carolina, Dallas would have a 2 game NFC advantage.
We go ahead of the Lions if they lose one NFC game. If the Falcons lose another game (against their murderous schedule - Jax,Rams, Philly) and we beat them (have to in order to go 5-0) we are ahead of them.