When the motors no load is already at 95% duty cycle and you power the motor with 95% duty cycle then the power output is 0 W. Think if a ideal world without any resistance. The means when you spin the motor with 1000 rpm then it will spin forever with that speed.
A 100 kv motor will spin at 95% (32.4 V) no load with 3240 rpm. When you power that motor now with 32.4 V it won’t spin any faster. You remember the donkey/carrot picture. So in this scenario the donkey reached already the carrot.
My question is now at which no load duty cycle (actual motor speed) you can still get a power output of 1440 W when your maximum duty cycle is 95% (32.4 V). Because when the motor spins already at 94.9 % duty cycle you can’t achieve 1440 watts anymore (at least not when you have a realistic resistance).