My suspicion comes from the Airbus "Getting to Grips..." publication. It notes (correctly) that an increase in V1/VR ratio moves the end of the TODR back and improves the obstacle limited TOM but for optimising V2/VS makes the statement "any V2/VS increase results in better climb gradients (1st and 2nd segment) and, therefore, in better climb limited MTOWs (1st segment, 2nd segment, obstacle)" Which I would agree with, except for the case of very close in obstacles where a greater V2/VS leads to a longer TODR and worse obstacle clearance until the improved gradient becomes dominant. Picky, I know, but I just wondered.