If we end with the same record as Seattle (including a victory in Seattle)...winning this game would give us the division and the bye. Seattle lost to the Saints.
Common opponents is a highly weighted tie breaker.
The bottom line is that if the Niners beat the Saints it effectively means the Seahawks have to win out to win the division.
[ Edited by okdkid on Dec 2, 2019 at 8:54 AM ]