The bottom line is that none of that tends to matter in the playoffs. Attrition sets in when you don't get the bye. You suffer more injuries, teams get to rest and game plan in advance for you.
Our chances of making the Super Bowl just dropped exponentially.
If our chances of making the SB depended on a big time performance from Kirk Cousins in prime time, then our chances dropped exponentially before the game was even played.
But look, we ARE a GOOD road team this year. Yes, if we have to play in a blizzard in GB, that's not good, but otherwise I think playing on the road is just a manageable hurdle.