the Vmcg as well Vmca are related to maximum rated thrust on the engine under your wings , so where you loose control applying the max rated when you suddenly need? also all single engine performance is related to maximum rated thrust
Not correct..... the GE90-90B engine operates with the following ratings;
The takeoff performance is based on whichever of these 3 ratings you have chosen to use on that day, the associated VMC speeds are based on THAT chosen rating and not on 90B (unless you are using 90B)
Mutt