In the whole "lets do what SF does" suspect argument, it's interesting to note the Packers were the better 1st. down team last season.
Here's the Packers distances on 2nd. down courtesy of pro-football-reference's play finder tool:
2nd. Down Yards to Go / Number of Plays / % of 2nd. down plays
0-3 / 67 / 18.7%
4-6 / 87 /24.3%
7-10 / 153 / 42.7%
11+ / 51 / 14.2%
- Average YTG on 2nd. down = 7.55 yards
- 7+ YTG on 56.9% of 2nd. down plays
- Aaron Jones averaged 4.9 YPC and Jamaal Williams averaged 3.8 YPC on 1st. down. The net deficit relative to those rushing stats is a function of incompletions, sacks and penaties.
Here's the same data for SF:
0-3 / 50 / 14.7%
4-6 / 73 / 21.5%
7-10 / 150 / 44.1%
11+ / 67 / 19.7%
- Average YTG on 2nd. down = 8.10 yards
- 7+ YTG on 63.8% of 2nd. down plays
That takes us to SF's 2nd. down performance which was superior, jumping to better yards to go positions on 3rd. down.
Here's the Packer distances to go on 3rd. down:
0-3 / 37 /18.2%
4-6 / 57 / 28.1%
7-10 / 69 / 34.0%
11+ / 40 / 19.7%
- Avergage YTG on 3rd. down = 7.89 yards [Note: On average, the Packers lost yards on 2nd. down.]
- 7+ YTG on 53.7% of plays, a slight 3.2% improvement over 2nd. down
- Aaron Jones averaged 4.4 YPC and Jamaal Williams averaged 5.0 YPC on 2st. down
Here's the 49er distances to go on 3rd. down:
0-3 / 48 / 23.4%
4-6 / 64 / 31.2%
7-10 / 50 / 24.4%
11+ / 43 / 21.0%
- Average YTG on 3rd. down = 7.35 yards, a modest improvement
- 7+ YTG on 45.4% or 3rd. downs, a signifcant 18.4% reduction over their 2nd. down
So, if one wanted to be more like SF, it might be best to run a little more on 2nd. down with the horses already on board.