But the could win the rest, yes. They play the Cardinals once and the 49ers twice. If they lose to both Vikings and Chiefs, and the Panthers somehow manage to beat the Saint at home, then they're out of the playoffs (Panthers get sixth seed). But if Seattle loses only to the Chiefs, they're in.
Good news on the Saints front is that the Panthers are in a "must-win" situation in those two games against the Saints, otherwise they're basically out of the playoffs (assuming they win their other games which are relatively easy). So a cornered and wounded Panthers team might just be fierce enough to pull one out against a division rival? We can hope?