I don't have the full season grade, but here's a rundown of his per-game grades (click the spoiler):
My trust in PFF has degraded, but at least the numbers mostly bear out what you describe.
I like the Bengals offense against the Bills defense (assuming things continue to click.
I'm not sure that I like the Bengals defense against the Bills offense. Anarumo has amassed a great resume for shutting down top-flight QBs, so perhaps he does it again. The raw matchup though is a bit scary. Consider what Purdy was able to do with his legs and how that might translate with Josh Allen instead. The big chunk plays in the passing game are also a concern against Diggs/Davis/Knox/Kincaid. They'll have their work cut out for them, and their success might depend upon the effectiveness of the pass rush. Hopefully Trey is full go.
If Burrow is at or near that level, I think they beat anyone. The Bills have been shaky the last four weeks (2-2, all decided by one score), but I figure they’ll rise to the challenge. It should be a great SNF matchup.