When comparing savings in the CloudHealth classic Cost Savings report to the NX Realized Savings / Commitment Savings, the classic savings are larger
Classic savings include RI savings and other discounts, but the Commitment savings in NX only shows RI savings, which is why it is lower.
These figures can be calculated using figures from FlexReports
RI savings (NX value) = Total OnDemandCost - reservation/EffectiveCost
Total savings (Classic savings) = Total OnDemandCost - reservation/NetEffectiveCost