They are only short rollouts (1k) but the bottom line answer isn't what's important here. The first thing I try to do sometimes is figure out what effect the score + cube position may have.
Now I'm sure you already knew OtB that 7/1 6/3* was out because of the score and the fact that we get no added value from winning a gammon. When I first looked at the position though it was a play that stood out to me before I noticed a score was attached. That's why I included it.
I'm sure it was also clear to you that losing a gammon here hurt a lot more than a normal score. It's in that respect that 7/4 7/1 is the most deficient. Take a look at the dice distribution in XG if you can. Two legit plays don't normally match up the way these two do in the breakdown of rolls.
Money game opponent owning the cube

              
 
              
 | | White is Player 2
score: 0 pip: 125 | Unlimited Game Jacoby Beaver | pip: 103 score: 0
Blue is Player 1 | |
| XGID=-ABa-bFB---BbB-----bbc--c-:1:-1:1:63:0:0:3:0:10 |
| Blue to play 63 |
| 1. | Rollout1 | 7/4 7/1 | eq: -0.029 |
| Player: Opponent: | 56.57% (G:8.03% B:0.20%) 43.43% (G:8.52% B:0.21%) | Conf.: ± 0.008 (-0.036...-0.021) - [51.5%] Duration: 19.9 seconds |
|
| 2. | Rollout1 | 13/10 13/7 | eq: -0.029 (-0.001) |
| Player: Opponent: | 56.15% (G:7.38% B:0.16%) 43.85% (G:5.79% B:0.12%) | Conf.: ± 0.008 (-0.038...-0.021) - [43.5%] Duration: 20.3 seconds |
|
| 3. | Rollout1 | 7/1 6/3* | eq: -0.035 (-0.006) |
| Player: Opponent: | 57.60% (G:8.67% B:0.18%) 42.40% (G:10.93% B:0.22%) | Conf.: ± 0.007 (-0.042...-0.028) - [5.0%] Duration: 20.8 seconds |
|
| |
1 1296 Games rolled with Variance Reduction. Moves: 3-ply, cube decisions: XG Roller
|
Money game owning the cube

              
 
              
 | | White is Player 2
score: 0 pip: 125 | Unlimited Game Jacoby Beaver | pip: 103 score: 0
Blue is Player 1 | |
| XGID=-ABa-bFB---BbB-----bbc--c-:1:1:1:63:0:0:3:0:10 |
| Blue to play 63 |
| 1. | Rollout1 | 13/10 13/7 | eq: +0.349 |
| Player: Opponent: | 55.92% (G:7.44% B:0.19%) 44.08% (G:5.75% B:0.12%) | Conf.: ± 0.009 (+0.340...+0.358) - [92.5%] Duration: 23.2 seconds |
|
| 2. | Rollout1 | 7/1 6/3* | eq: +0.340 (-0.009) |
| Player: Opponent: | 57.38% (G:9.36% B:0.21%) 42.62% (G:11.50% B:0.24%) | Conf.: ± 0.009 (+0.330...+0.349) - [7.5%] Duration: 23.5 seconds |
|
| 3. | Rollout1 | 7/4 7/1 | eq: +0.324 (-0.025) |
| Player: Opponent: | 55.98% (G:8.68% B:0.20%) 44.02% (G:8.45% B:0.20%) | Conf.: ± 0.008 (+0.316...+0.332) - [0.0%] Duration: 20.4 seconds |
|
| |
1 1296 Games rolled with Variance Reduction. Moves: 3-ply, cube decisions: XG Roller
|