First of all, the indices in norms book are RISK AVERSE. The hi-lo indices you are comparing to commonly found around the internet, bja3(which are from wong's book), and wong's professional bj are EV MAXIMIZING indices. They are completely different if you want to compare them that way.
Yes, the indices are generated in norms book. Again, they are RISK AVERSE and if you read carefully, the only time you would subtract 4 from each index would be IF you are using the brett harris simplification that starts with an IRC of -pivot. For the traditional method of ub'd tc calculation those indices are correct. The reason why some indices are close is because RISK AVERSION has little use on some indices, the choice is night and day.
I did go ahead and run a nice simulation for you. I used the EV MAXIMIZING indices in bja3/wong. To your surprise, TKO worked just fine, in fact, it outperformed Hi-Lo.
The rules I used were s17, surrender, no rsa, no doa. 5/6 penetration 1-12 spread using 2 hands at all counts.
You can find the results attached.
Attachment 1700
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