This position came up in the OLM at GammonU on Sunday. I posted these rollouts over there, but I like to put them here as well. Otherwise they are lost in 7 days when GammonU truncates its index.
The 4away/8away score tips the balance in favor of the splot. In unlimited games, running is just as good or better.
Petter Bengtsson suggests the difference is due to GS effects. I suspect he is right.
Mike 
4away, 8away
 1.  Rollout^{1}  Bar/20 11/5  eq: 0.4262   Player: Opponent:  43.29% (G:11.40% B:0.98%) 56.71% (G:20.17% B:1.09%)  Conf.: ±0.0030 (0.4292...0.4232)  [100.0%] Duration: 3 hours 19 minutes 
 2.  Rollout^{1}  Bar/14  eq: 0.4391 (0.0129)   Player: Opponent:  44.30% (G:10.41% B:0.97%) 55.70% (G:20.82% B:0.73%)  Conf.: ±0.0031 (0.4422...0.4359)  [0.0%] Duration: 3 hours 21 minutes 
  ^{1} 31104 Games rolled with Variance Reduction. Dice Seed: 46549488 Moves: 3ply, cube decisions: XG Roller


Rollout by Taper_Mike 2013Jul07 eXtreme Gammon Version: 2.10.199.2658 MET: Kazaross XG2 53P32S52H65.48tm.xgp 48 [W R13] "<=31 48 [W R4] "&e

eXtreme Gammon Version: 2.10, MET: Kazaross XG2
53P32S52H65 — According to Score Bot  Seed  Equity  Nacbracs  Link 
GnuBg 0.xx 2ply Trunc, MET: RockwellKazaross  687329498  –490.584  –4–8 [W R13] /0.360t  Taper_Mike 
XG 2.10 3ply, Cubes: XGR, MET: Kazaross XG2  [Petter 31k + Mike 31k]  –426  –4–8 [W R12] "<=62  [XG2 Aggregate] 
XG 2.10 3ply, Cubes: XGR, MET: Kazaross XG2  13579  –426  –4–8 [W 11] "<=31  Petter Bengtsson (subscribers only) 
XG 2.10 3ply, Cubes: XGR, MET: Kazaross XG2  46549488  –426.2  –4–8 [W R13] "<=31  Taper_Mike (above) 
XG 2.10 XGR++ Eval, MET: Kazaross XG2  [XGR++ seed]  –445.2  –4–8 [W R4] "&e  Taper_Mike 
Key: R (Run) = bar/14, W (Wild) = bar/20 11/5
Explanation of nacbracs
Unlimited Games
 1.  Rollout^{1}  Bar/14  eq: 0.2976   Player: Opponent:  44.36% (G:10.51% B:0.54%) 55.64% (G:20.68% B:0.85%)  Conf.: ±0.0022 (0.2998...0.2954)  [100.0%] Duration: 6 hours 51 minutes 
 2.  Rollout^{1}  Bar/20 11/5  eq: 0.3051 (0.0075)   Player: Opponent:  43.52% (G:11.41% B:0.50%) 56.48% (G:20.23% B:1.15%)  Conf.: ±0.0021 (0.3072...0.3030)  [0.0%] Duration: 6 hours 10 minutes 
  ^{1} 62208 Games rolled with Variance Reduction. Dice Seed: 46549488 Moves: 3ply, cube decisions: XG Roller


Rollout by Taper_Mike 2013Jul08 eXtreme Gammon Version: 2.10.199.2658 53P32S52H65tm.xgp [R W7] "<=62 [R W21] "&e

eXtreme Gammon Version: 2.10
53P32S52H65 — Unlimited Games Bot  Seed  Equity  Nacbracs  Link 
GnuBg 0.xx 2ply Trunc  687245583  –344.076  [R W16] /0.360t  Taper_Mike 
XG 2.10 3ply, Cubes: XGR  [Petter 20k + Mike 62k]  –298  [R W9] "<=82  [XG2 Aggregate] 
XG 2.10 3ply, Cubes: XGR  13579  –299  [R W12] "<=20  Petter Bengtsson (subscribers only) 
XG 2.10 3ply, Cubes: XGR  46549488  –297.6  [R W7] "<=62  Taper_Mike (above) 
XG 2.10 XGR++ Eval  [XGR++ seed]  –296.8  [R W21] "&e  Taper_Mike 
Key: R (Run) = bar/14, W (Wild) = bar/20 11/5
Explanation of nacbracs