It's very foolhardy to predict NFL strength of schedule based on any given year as things can change so much. Yes, I suspect KC and Detroit to be very good again next year. But imagine we had faced the AFC East and NFC West this year.
Bills were expected to be good and were even better but the AFC East ended up being pretty easy especially if you caught Miami without Tua. Jets ended up two games worse than last year and the Pats made almost no improvement despite drafting Drake Maye.
As for the NFC West, the 49ers were way down with the Rams/Seahawks staying pretty flat. Arizona did improve slightly.
So, going into the year, if the Commies had faced those 8, I would have said:
Bills - definite loss
Miami - probable loss
Jets - maybe
Patriots - good chance at a win
49ers - definite loss
Rams - probable loss
Seahawks - maybe
Cardinals - good chance at a win
And of those, I'd move Miami, Jets, and 49ers into the 'good chance at a win category' based on what we know now (note: not factoring in how much better the Commies were but rather how the teams were against what they were projected to be) and Cardinals to a 'maybe'. I could've used the AFC North too (Ravens were expected to be good and were but Browns took a huge step back and Bengals were crap for half the year though they ended up with the same record).
Broncos had a soft schedule. Chargers had some Harbaugh juice and could come back a bit. Can KC stay 14-15 wins every year (probably yes but maybe not)? Detroit could easily take a half step back. Minnesota could take a big step back, for a year, if they go with a rookie QB. And there are always injuries. Bears should be better but maybe they hire McCarthy and get worse somehow.
Its fair to say that when we play them is as important as who we play and we don't actually know the schedule yet. Its also of course accepted that they won't all have the same record next year as this year. But looking ahead, like @ynotcaps listed, thats a butt ton of great QBs we face, so our defense is going to have to step way way up or we will be in a boat race every weekend.
Granted, if its going to be a shootout, I like our gunslinger over most all those other guys anyway. But I don't like our defense against all those other teams, not as it is constructed right now. We'll need a heck of an offseason to fix this defense.