Spanish 21 H17 redouble basic strategy

Q for Michael, I have been studying the H17 redouble variant and found a few surprises through simulation.

Basic strategy for 22 and 33 are split 2-8. In CVData these defensive splits actually lose less when you hit instead of split.

22 v 2
33 v 2
22 v 8

EV from the MGP BJ Combinatorial Analyzer confirms the WoO basic strategy..

22 v 2 Split: -0.0770 Hit: -0.0912
33 v 2 Split: -0.1350 Hit: -0.1432
22 v 8 Split: -0.0687 Hit: -0.0754

CVData 1b round sim results ..

22 v 2 Split: -0.1097 Hit: -0.0874
33 v 2 Split: -0.1665 Hit: -0.1433
22 v 8 Split: -0.0946 Hit: -0.0740

Any idea why the discrepancy?

Thanks!