In one of the training courses there is a graph showing the effect of improved climb. It shows clearly from the start of the takeoff run that the point where the improved climb crosses above the unimproved is half way to 3000 feet.
IN both cases you are achieving 2.4% gradient, normally with an improved climb gradient you would get a higher gradient, but you have traded this for thrust reduction, therefore the flight paths will not cross.
Normal V1 may give a V2 at 35 feet and 7000 feet.
Imp Climb may give a V2 at 35 feet and 10000 feet.
From these starting points, draw gradient lines of 2.4% up to acceleration height and you will see that they wont cross. However, if you use improved climb without the additional thrust reduction, they will cross.
Your EFB is only as good as the inputs, garbage in, garbage out.....
Mutt