Where did you get your figures from ?
From Annexe 12 to the BEA report. This is the satellite picture of CDG with all the important points (lift off, crash site...) and the point where the FO was calling out V1. This point is at less than 1/3 of the runway length.
it was not possible to 'hold' the aircraft 'on the brakes' at full power plus reheat.
This of course does already explain a lot...