Have you two finished?
Keith, the TriStar observations are not the same as the B737. There V2 decreases only because of the VMCA limit. The TriStar V2 decreases as density altitude increases AND is weight related. It shows a line which appears to be a limit of 1.25VMCA, a figure I cannot reference, separately. Get an old copy of the CAA Perf A specimen graphs, figure 16, this may be where DECU's question came from.