Had the San Francisco 49ers been able to deal with the raging defense that was the Seattle Seahawks over the weekend, the game might have been a real game, and it quite possibly would have resulted in a different ending because of Sam Darnold's decent but not great performance.
Yes, he got the win, and that's what matters at the end of the day. That said, Darnold was nowhere near the reason the Seahawks crushed their division rivals, sending them packing and slamming the door on their incredible season. No, the Seahawks won because of what they did with their running game within the offense.