Did it give the same V1 for both cases? If the V1 is lower for the reduced power case, then the accelerate-go distance reduction due to V1 reduction, could outweigh the increase due to thrust decrease.
This is a mistake, sorry. A lower V1 gives a longer, not shorter, accelerate-go distance.
Last edited by Vessbot; 12th May 2018 at 16:52.