Look at the second example: the all-engine go distance is longer than the inop go distance. Does that make sense to you? Doesn't to me.
With that in mind I'd suspect the calculations.
Can you set the system up to produce calculations for the same takeoff n1 but achieved differently?
i.e. calculate for double-derate (22k) n1, calculate for that same n1 achieved through single-derate (24k)+ATM, calculate for that same n1 achieved through ATM alone (i.e. ATM from 26k)
If you can't produce figures for double derate at this location/weight please adjust until you can, for the purpose of this experiment.