The I18 and Sw16 both include the 10v10 index (my non RA is 4+), but they do not address the Composition Dependent (CD) 5,5v10 specifically. Therefore within I18 & Sw16 the default for a 5,5v10 index is the same as 10v10, which in my case is double at +4 (non RA).

However, when I add the "double 5,5v10 @ 4+" Composite Dependent option in the Hard Double strategy tables of CVCX, (and note that this index is the exact same (+4) as the 10v10 index) the SCORE increases dramatically, which does not make sense to me. Without the CD index, a 5,5 will be treated as a 10, which has the same doubling index of 4. Then why does the SCORE change dramatically with the addition of this CD???

Here are the results of my sims (750,000,000 iterations each) at H17 DAS RSA 4.75/6 6pl NoPeek10, using the indices generated for my parameters (generated by CVData, and are very close to the basic Sw16):

Baseline (Sw16 indices, which includes dbl 10v10@4+, but NO composite dependent additions):
$/hr: 24.86
SCORE: 18.22
RoR: 12.1%

Sw16 indices (same as above), but WITH the addition of a single Composite Dependent index dbl 5,5v10@4:
$/hr: 36.73
SCORE:27.19
RoR: 11.8%


Note the huge SCORE increase.

I've run these simulations several times and always get similar results.

The only reason I can think of the large SCORE increase is; perhaps the software runs BOTH 10v10 AND 5,5v10 for a single instance of 5,5v10 therefore doubling the frequency of 5,5v10. But I doubt if this is it, and probably there's something else that I'm missing.

Anyone care to share their wisdom in this dilemma?