Net/gross gets an airing in the climb segments ... can you lead some supporting evidence to support your contention that there is a similar factored approach to the runway numbers ?
I suggest that the 35ft screen is hard data. What you might be having a problem with is the fact that there are several cases to be considered. In the normal sort of situation one routinely sees the AEO takeoff case in action (which is distance factored) and it is easy to fall into the trap of presuming that there is a nice big fat pad for all the cases. However, if you are OEI TOD1/TOR1 limited, especially if you are using clearway .. and you have a near V1 failure with the takeoff continued, then you might very well have an up close and personal experience with the end of the runway ....