It could be.
I like the Packers and Vikings as true contenders more than the Niners and Seahawks. Rams up in the air for me right now.
But having said that:
Niners wins - Bucs, Bengals, Steelers, Browns, Rams, Redskins
Seahawks wins - Bengals, Steelers, Cardinals, Rams, Browns
Cardinals wins - Bengals, Falcons, Giants
Niners/Seahawks/Cardinals have beaten zero teams with a winning record outside of the Rams. People are now saying the Niners are legit, and at 6-0, it's hard to dispute.
But that claim lies solely on the 20-7 win over the Rams. I expect the Cardinals to fall off a bit, and the Niners and Seahawks schedules are about to get real:
Niners - Panthers, @Cardinals, Seahawks, Cardinals, Packers, @Ravens, @Saints, Falcons, Rams, @Seahawks
Seahawks - @Falcons, Bucs, @Niners, @Eagles, Vikings, @Rams, @Panthers, Cardinals, Niners
Now, again - I do expect the Cardinals to fall off, so that gives the Niners three "easy" wins - but the rest are all games they could lose. Is their defense really this good? Can the offense improve enough? At this point it seems like 11-5, at worst, and 12-4 is definitely possible.
Seahawks rarely have an easy time with the 10am start times, but they should beat Atlanta and then get Tampa Bay at home - after that? I see the potential for five straight losses. That is a ROUGH stretch of games. I doubt they actually lose all of them though - so 10-6 feels right, but 11-5 is obviously possible.
For the Rams - we get a mini bye this week and then the actual bye for McVay to figure some stuff out on the OL - and then we test that out in Pittsburgh. I think our season will hinge on that game, even though it's an AFC opponent - win and we can make a push for the division, lose and at 5-4 we will be struggling to grab a wildcard spot.
Rams - Bengals (London), @Steelers, Bears, Ravens, @Cardinals, Seahawks, @Cowboys, @Niners, Cardinals
Rams schedule is fairly tough too - need to see the Steelers game before putting anything out there, but if McVay gets the OL situated, 10-12 wins is still attainable. Either way, I imagine that the Niners will have a chance to clinch the NFC West in week 16.