MoD is correct, those are two different situations and could in theory be different numbers. For simplicity i just made them both 5%.
So we have two conditions that can be met both, either, or none.
One condition is ‘btc overflow’ which happens when the standard is positive (i.e. we have more than 15% btc reserves). When this condition is met we seek to buy nsr and ppc with a market velocity of 5% of the btc overflow for each.
The other condition is ppc overflow which has not happened and likely won’t happen for some time. That condition is met when we have 5% ppc reserves with reference to the circulating nubit debt. So:
ppc reserve - 0.05*(nbt debt) = ppc overflow
The market velocity is such that 5% of that overflow is sold for btc.
When both conditions are met the portion of btc overflow that would be used to buy ppc is instead used to buy nsr.
I know it’s complicated, but I thought there was sufficient precident for overflow mechanics that shareholders would understand. I’ll do my best to clear this all up in the upper tier motion. Using the language of the ‘standard’ will be helpful I think.