The 49ers took a big step backwards last year, but it wasn't just a Super Bowl hangover, they just had a ton of starters get hurt.
The Packers played them in San Francisco last year and had no problems coasting to a 34-3 lead in the 4th quarter before giving up a couple late touchdowns and winning 34-17. Aaron Jones and the running game didn't come up with a lot of production, but Aaron Rodgers threw for over 300 yards (with more than half of them going to Davante Adams) and 4 touchdowns to notch a 147.2 rating.